Best Shopify Back in Stock Apps in 2026 (Compared, Scored & Ranked)

When a product goes out of stock, most Shopify merchants lose that sale permanently. The shopper leaves, finds a competitor, and never comes back. Back-in-stock alerts change that equation. Instead of losing the customer, you capture their email or phone number at the moment of highest intent and send them an automatic notification the moment inventory returns. Done well, this single tactic recovers sales that would otherwise disappear entirely.

Shopify does not include a native restock alert system. To add "Notify Me" buttons to out-of-stock product pages and trigger automatic email, SMS, or push notifications when inventory is replenished, you need a dedicated app. The market has dozens of them, ranging from lightweight email-only tools to full-featured platforms that combine back-in-stock alerts with preorders, wishlists, price drop notifications, and demand forecasting analytics.

This guide covers 7 of the best Shopify back in stock apps available in 2026. Each app was evaluated using Shopify App Store data, listing information, feature sets, pricing, and verified merchant reviews. Apps are ranked by Overall score from highest to lowest. Use the comparison table for a quick decision, or scroll to any individual app section for a full breakdown.

Quick Results

How We Evaluated

Every app in this list was researched from public sources only. We reviewed each app's Shopify App Store listing for pricing tiers, feature bullets, Built for Shopify certification, star rating, and review count. We also reviewed a representative sample of App Store reviews, including recent positive reviews, critical reviews, and long-term user feedback, to identify real merchant-reported strengths and weaknesses. We did not install or test any app hands-on.

The five dimensions we scored are:

1. Pricing and Value - Free plan availability, price per tier vs. what you get, fairness for small stores with limited budgets.
2. Feature Richness - Depth and breadth of back-in-stock and notification features: email, SMS, push notifications, preorder support, wishlist, price drop alerts, customization options, and analytics.
3. Built for Shopify / Integration - Whether the app holds the Built for Shopify badge, how natively it integrates with Shopify themes, customer accounts, POS, Flow, and checkout, and its overall performance standards.
4. Ease of Use (UI/UX) - Setup effort, admin clarity, onboarding experience, documentation quality, and how quickly a merchant can get up and running.
5. Support and Reputation - App Store star rating, total review volume, support responsiveness as reported by merchants, and developer track record over time.

Scoring Model

Each app receives a score from 1 to 10 on every dimension. The Overall score is the simple average of all five dimension scores, rounded to one decimal place. No app scores a perfect 10 across all dimensions because every tool involves trade-offs. A higher price might mean richer features. A simpler interface might mean fewer customization options. Scores reflect relative performance within this category, not absolute comparisons against all Shopify apps.

Full Comparison Table

1. STOQ: Preorder, Back In Stock - Best for Preorders Combined with Restock Alerts

STOQ, built by Artos Software, is the highest-rated back-in-stock app in this comparison by a significant margin. With a 5.0-star rating across 3,496 reviews, it has earned its reputation through a combination of genuinely useful features and support that merchants consistently describe as exceptional. STOQ handles both back-in-stock alerts and preorders in a single app, making it the strongest choice for stores that need both capabilities simultaneously.

Pricing and Value (9/10): STOQ offers a free plan with 10 preorders per month and 30 email alerts per month. Paid plans start at $10 per month (Lite), $29 per month (Pro), and $69 per month (Unlimited). The free plan is useful for testing, and the jump from free to Lite is affordable. The Unlimited plan at $69 per month delivers unlimited preorders and unlimited email and SMS alerts with no transaction fees, making it one of the better-value propositions at the upper tier. The pricing reflects the depth of features included. A 14-day free trial applies to all paid plans.

Feature Richness (9.5/10): STOQ covers the full spectrum: back-in-stock email and SMS alerts, preorder and backorder functionality with optional deposits or partial payments, customizable "Notify Me" and "Preorder" buttons, countdown timers, badges, banners, B2B preorder support, and multi-location inventory. The app also supports 22 languages out of the box and provides analytics on customer demand. Few single apps pack this much capability into one platform. The only notable limitation reported by merchants is that the app cannot detect stock changes within Shopify Bundle products, which is a platform-level constraint rather than an app design flaw.

Built for Shopify / Integration (9.5/10): STOQ carries the Built for Shopify badge and integrates natively with Shopify POS, Shopify Flow, Shopify Checkout, and Shopify Customer Accounts. It connects with Klaviyo, Mailchimp, and Omnisend for email marketing. The native integration with Shopify's checkout and customer account system means the experience feels seamless rather than bolted on.

Ease of Use (8.5/10): Most merchants report a smooth experience once the app is running. One reviewer noted that initial setup required several hours to configure product-level settings and options, which reflects the app's depth more than poor design. Support steps in to assist with setup where needed, and the Klaviyo integration setup is particularly praised for clarity. For merchants with simple stores, STOQ may feel like more app than they need, but the configuration pays dividends in flexibility.

Support and Reputation (9.5/10): The support quality at STOQ is referenced in almost every merchant review. One reviewer described support going beyond scope: "Arnab even helped me fix problems that had absolutely nothing to do with STOQ." Another reported a custom feature implemented within hours that generated over $3,000 in presales during the first weekend. Response times, technical knowledge, and a willingness to handle edge cases are consistent themes across hundreds of reviews.

Pros:

• 5.0-star rating with nearly 3,500 reviews
• Handles both preorders and back-in-stock alerts in one app
• 22+ languages, B2B support, and multi-location inventory
• Native Shopify integration including POS and Checkout
• Exceptional, beyond-scope support

Cons:

• Unlimited plan at $69/month is the most expensive option in this list
• Initial setup can take several hours for stores with complex configurations
• SMS costs are separate from plan fees

Pricing:

• Free: 10 preorders/month, 30 emails/month
• Lite: $10/month - 100 preorders, 1,000 email/SMS alerts
• Pro: $29/month - 400 preorders, 2,000 email/SMS alerts
• Unlimited: $69/month - unlimited preorders and alerts, no transaction fees

2. Back In Stock, Notify Me: Kbite - Best for Small Stores on a Budget

Kbite, developed by DEVSQUAT SOLUTIONS based in Germany, holds the highest review count in this entire comparison: 3,856 reviews at a perfect 5.0-star rating. That combination is unusual and reflects a broad merchant base that consistently finds value in the product. The app's pricing is exceptionally lean, starting at $5 per month for paid access, which makes it the most affordable full-featured option on this list. Kbite focuses on doing one thing extremely well: capturing demand interest when products go out of stock and notifying customers automatically when those products return.

Pricing and Value (9.5/10): Kbite's free plan includes unlimited subscribers and 30 email notifications per month. The Basic plan at $5 per month increases this to 500 monthly emails and adds mailing list sync. The Starter at $9 per month delivers 2,500 emails per month, and the Pro at $19 per month covers 5,000 emails monthly with custom integrations. This is the most affordable paid tier structure in this category. SMS is available across all plans at rates starting from $0.02 per message, one of the lower per-SMS rates available. For stores that primarily need email alerts and want to keep costs minimal, Kbite delivers exceptional value.

Feature Richness (7.5/10): Kbite covers the essential back-in-stock and price drop notification workflow: customizable "Notify Me" buttons, automated email and SMS alerts, waitlist analytics, mailing list synchronization, multi-language support (22+ languages), and multi-location inventory. What it does not include is preorder functionality or web push notifications, which STOQ, Notify Me!, and Amp Back in Stock offer. If your store does not run preorders and you do not need push notifications, Kbite's feature set is complete. If you do need those capabilities, look at STOQ or Notify Me! instead.

Built for Shopify / Integration (9/10): Kbite holds the Built for Shopify badge and integrates with Shopify Checkout, Shopify Admin, PageFly, and Shopgun. It does not list Klaviyo or Omnisend as direct integrations (the Pro plan mentions custom integrations), which is a minor limitation for stores with advanced email marketing workflows. The core Shopify integration is solid, and the app is built to work within Shopify's theme extension system.

Ease of Use (8.5/10): Merchants consistently use the phrase "set and forget" when describing Kbite. Reviews highlight quick setup, minimal configuration, and reliable operation once running. One long-term reviewer (4 years of use) described it as "easy to set up, simple to use." Support steps in quickly when customization is needed, often delivering solutions within minutes.

Support and Reputation (9.5/10): Kbite's support team, frequently led by "Sam," receives consistent praise for speed and precision. Multiple reviews describe requests completed "within minutes" without excessive back-and-forth. One South Africa-based merchant described support as "instant, professional, and genuinely impressive." The 5.0-star average maintained across nearly 4,000 reviews suggests sustained quality over time, not just early momentum.

Pros:

• Highest review count in this comparison (3,856) at 5.0 stars
• Extremely affordable, starting at $5/month for paid access
• Unlimited subscribers even on the free plan
• "Set and forget" reliability praised by long-term users
• Multi-language support for international stores

Cons:

• No preorder functionality
• No web push notification channel
• Klaviyo/Omnisend direct integrations require Pro plan or custom setup
• Free plan limited to 30 email notifications per month

Pricing:

• Free: Unlimited subscribers, 30 emails/month
• Basic: $5/month - 500 emails/month, mailing list sync, multi-language, multi-location
• Starter: $9/month - 2,500 emails/month, batch delivery
• Pro: $19/month - 5,000 emails/month, custom integrations

3. Notify Me! Back in Stock Alert - Best for All-in-One Waitlist, Preorder, and Wishlist

Notify Me!, built by the Notify Me! team based in Richmond, BC, launched in 2020 and has grown into one of the most reviewed back-in-stock apps on the Shopify App Store, with 3,545 reviews at a 4.9-star rating. The app positions itself as a three-in-one tool: back-in-stock alerts, preorders with partial payments, and wishlists, all manageable from a single admin. For merchants who want to consolidate multiple inventory-related workflows into one app, Notify Me! is the strongest all-in-one option.

Pricing and Value (7.5/10): The Lite plan is free but limited to 10 restock notifications, 5 preorders, and 50 wishlist actions per month. The Kickstart plan at $9.90 per month (or $95 per year) expands this significantly to 500 preorders and 500 alerts. The Starter at $19.90 per month adds customization features and brand-customized emails. The Standard at $39.90 per month brings 1,500 alerts, 10,000 wishlist actions, collection page widgets, and preorder discounts. The pricing is fair for the feature breadth but the free plan is noticeably more restrictive than Kbite or Ordersify, which limits how much you can test before committing. Annual billing saves 17% across all plans.

Feature Richness (9/10): Notify Me! covers back-in-stock alerts via email, SMS, and web push, low-stock widgets with "only X left" counters, B2B and D2C preorders with partial payment support, guest wishlist functionality, inventory forecasting, and demand analytics. The breadth of channels (email, SMS, push) and use cases (restock, preorder, wishlist, low-stock) in a single app is one of the broadest in this category. Support for Shopify POS and Customer Accounts adds further depth.

Built for Shopify / Integration (9/10): Notify Me! holds the Built for Shopify badge and integrates with Klaviyo, Mailchimp, Omnisend, PageFly, PushOwl, Shopify Sidekick, Shopify Checkout, Customer Accounts, and POS. The combination of email service provider integrations and Shopify-native touchpoints is comprehensive. 13 languages are supported out of the box.

Ease of Use (8/10): Most merchants describe the interface as user-friendly and easy to navigate once set up. One recent reviewer noted that the initial AI-powered support chat felt unfamiliar at first, but quickly routed to the right human agent. This is a minor friction point rather than a structural problem. The app handles multiple use cases (alerts, preorders, wishlists) from a single dashboard, which adds interface complexity relative to simpler tools but makes it more powerful for stores that need all three.

Support and Reputation (9/10): Support quality is a consistent highlight across reviews. Team members are mentioned by name, and merchants describe fast resolution of complex multi-store configurations. Response times and solution clarity are praised repeatedly. A 4.9-star rating maintained across 3,545 reviews represents a strong, sustained reputation.

Pros:

• True all-in-one: back-in-stock, preorders, wishlist, and low-stock alerts
• Email, SMS, and web push channels
• 3,545 reviews at 4.9 stars
• Built for Shopify with POS and Customer Account integration
• B2B preorder support with partial payments

Cons:

• Free plan limited to only 10 restock notifications
• AI support chat can feel unfamiliar initially
• Higher usage plans require $39.90/month or more
• 13 language options vs. 22+ in STOQ and Kbite

Pricing:

• Lite: Free - 10 restock notifications, 5 preorders, 50 wishlist actions
• Kickstart: $9.90/month - 500 preorders, 500 alerts, 2,000 wishlist actions
• Starter: $19.90/month - 500 preorders, 500 alerts, brand-customized emails
• Standard: $39.90/month - 1,500 alerts, 10,000 wishlist actions, preorder discounts

4. Amp Back in Stock - Best for Multi-Channel Alerts at Scale

Amp Back in Stock, built by HEL SG PTE LTD, serves over 25,000 brands and claims to have delivered hundreds of millions of notifications. It offers a comprehensive suite combining back-in-stock alerts, preorders and pre-sell with upfront payment collection, wishlist functionality, low-stock badges, and demand analytics. The 4.9-star rating across 832 reviews reflects a loyal merchant base, including several reviewers who have used the app for five to seven years across multiple stores.

Pricing and Value (7.5/10): The free plan is limited to 10 notifications per month, which is not enough for stores with regular restock cycles. Paid plans run $19 per month (Starter, 500 notifications), $49 per month (Growth, 2,000 notifications), and $99 per month (Pro, unlimited notifications). SMS notifications cost an additional $0.015 per message across all tiers. At the Pro level, this is the most expensive option in the comparison. The pricing reflects Amp's feature depth, but stores on tight budgets will find STOQ or Kbite more cost-effective for similar or better results.

Feature Richness (9/10): Amp delivers email, SMS, and web push notifications, preorder and pre-sell with full payment collection, wishlist capability, low-stock badges and counters, multi-language support, and activity reporting with demand analytics. The combination of three alert channels, preorders, and wishlist in one app places Amp among the most feature-complete options. Integrations with Klaviyo, Mailchimp, Zapier, and Shopify Flow extend its reach into broader marketing workflows.

Built for Shopify / Integration (9/10): Amp holds the Built for Shopify badge and integrates natively with Shopify Flow, Klaviyo, Mailchimp, and Zapier. The app's scale of 25,000+ brands is itself evidence of reliable Shopify ecosystem integration. Theme compatibility and OS 2.0 support are included.

Ease of Use (8/10): Merchants describe a well-designed interface and intuitive admin. Long-term users (five to seven year range) cite ease of integration and a clean appearance as ongoing strengths. Support is named as a key facilitator for setup, particularly for theme embedding and custom code placement.

Support and Reputation (8.5/10): Amp's support team is praised consistently across reviews, with specific team members (including Leslie Hernandez and Jay) named repeatedly for quality and responsiveness. One LINDA FARROW merchant noted custom code implemented within 24 hours. The 4.9-star average across 832 reviews is strong, though the smaller review base compared to STOQ or Kbite means there is less community evidence over time.

Pros:

• Three alert channels: email, SMS, and web push
• Preorder and pre-sell with full payment collection
• Wishlist and low-stock badge features included
• Serves 25,000+ brands with hundreds of millions of notifications delivered
• 4.9 stars, including 5-7 year loyal users

Cons:

• Free plan limited to 10 notifications per month
• Pro plan at $99/month is the most expensive in this comparison
• SMS billed separately at $0.015 per message
• Smaller review volume than top-ranked apps

Pricing:

• Free: 10 notifications/month
• Starter: $19/month - 500 notifications/month
• Growth: $49/month - 2,000 notifications/month
• Pro: $99/month - unlimited notifications

5. Ordersify: Restocked Alerts - Best for Branded Emails and Long-Term Reliability

Ordersify has a smaller review count than the top-ranked apps, but its user base is notably loyal. Several reviewers mention using the app for three to five years, which is a stronger indicator of long-term reliability than a high review count from newer installs. The app's 4.9-star average across 665 reviews reflects consistent performance rather than a single early burst of good feedback. Ordersify emphasizes branded email delivery (merchants can send alerts from their own email domain), automatic low-stock reports alongside restock alerts, and a multi-location warehouse setup.

Pricing and Value (8.5/10): The free plan includes 100 notifications per month, which is notably more generous than Amp (10) or Notify Me! (10). The Basic plan at $9.99 per month includes 1,000 notifications and integrations. The Professional plan at $19.99 per month delivers unlimited notifications, which is the most affordable "unlimited email" tier in this comparison. The Unlimited plan at $39.99 per month adds unlimited SMS. The pricing structure rewards merchants who want a simple, affordable, no-fuss tool.

Feature Richness (7.5/10): Ordersify focuses on back-in-stock email alerts, low-stock reports sent automatically when inventory drops below a threshold, custom branding and email domain options, multi-language support (10+ languages), pop-up customization, stock counter displays, and multi-location warehouse support. What it does not include is preorder functionality or web push notifications. It integrates with Klaviyo, Mailchimp, PushOwl, and Wiser. For stores that only need alerts and low-stock monitoring, the feature set is well-matched. For stores that also want preorders or push, look to STOQ or Amp.

Built for Shopify / Integration (8.5/10): Ordersify holds the Built for Shopify badge and integrates with Klaviyo, Mailchimp, PushOwl, Wiser, and Shopify Checkout. The badge confirms native Shopify integration standards. The PushOwl integration enables push notification functionality for merchants who want it, though this requires a separate app subscription.

Ease of Use (8.5/10): Merchant reviews describe "simple setup" and "proven functionality" consistently. One merchant noted that their first restock notification immediately drove a sale they would otherwise have lost. The admin interface is not described as complex, and support is available for theme customization where needed.

Support and Reputation (9/10): The Ordersify support team, led by "Andy," is praised extensively across reviews. A merchant from Iceland with three years of use called Andy and team "always available to help." A UK wholesaler praised customization of alert button display for specific customer segments. The combination of 4.9 stars and multi-year loyalty signals a team that maintains its service quality over time, not just at launch.

Pros:

• Free plan with 100 notifications/month (most generous free tier in this list)
• Unlimited notifications from $19.99/month
• Send alerts from your own email domain and branding
• Automatic low-stock reports alongside restock alerts
• Strong long-term reputation, including 5-year users

Cons:

• No preorder functionality
• No native web push notifications (requires PushOwl separately)
• Supports 10+ languages vs. 22+ in top-ranked apps
• Smaller overall review base than STOQ or Kbite

Pricing:

• Free: 100 notifications/month, unlimited contacts
• Basic: $9.99/month - 1,000 notifications/month, integrations, badges
• Professional: $19.99/month - unlimited notifications, low stock reports
• Unlimited: $39.99/month - unlimited notifications, unlimited SMS

6. SC Back in Stock Notify Me - Best for Multi-Location Inventory Tracking

SC Back in Stock Notify Me is developed by Shop Circle, a company that manages a portfolio of Shopify tools. The app holds the Built for Shopify badge and offers a feature set that includes email and SMS alerts, waitlists, price drop notifications, and multi-location inventory controls, with support for 28 languages, the widest language coverage of any app in this comparison. The 4.5-star rating across 158 reviews reflects a smaller, newer user base relative to the other apps here.

Pricing and Value (8/10): The free plan includes 50 email alerts, unlimited back-in-stock requests, automatic notifications, bulk export, and integration access. This is a reasonable starting point. The Email Only plan at $10 per month delivers unlimited emails and multi-location support. The Starter at $20 per month adds 200 SMS notifications and analytics. The Pro at $45 per month includes 500 SMS and custom email addresses. The pricing is fair, with the free plan usable for small volumes and the Email Only plan at $10 per month providing a sensible upgrade path.

Feature Richness (7.5/10): SC Back in Stock covers automated restock notifications via email and SMS, low stock warnings, price drop alerts, customer demand tracking, multi-language support (28+ languages), customizable templates, inventory monitoring across multiple locations, and bulk export of subscriber data. It integrates with Klaviyo, Mailchimp, and Dotmailer for advanced email marketing. The multi-location inventory feature is more explicitly developed than in some other apps, making it relevant for larger retailers who stock across warehouses or multiple retail locations.

Built for Shopify / Integration (8/10): The app holds the Built for Shopify badge and connects with Klaviyo, Mailchimp, Dotmailer, Transcy (for translation), and Shopify Admin. The integration set is narrower than top-ranked apps but covers the core email marketing stack.

Ease of Use (7.5/10): The feature set is comprehensive but the smaller review base means there is less community knowledge available for troubleshooting or setup guidance. The admin experience is not described in detail in available reviews, and the 14% lower ratings (1-2 stars) are proportionally higher than in top-ranked apps, suggesting some merchants encounter friction.

Support and Reputation (7/10): A 4.5-star average with 158 reviews is lower than any other app in this list. The 14% negative review rate is a meaningful signal for an app in a space where 5.0-star apps with thousands of reviews exist. Shop Circle maintains a portfolio of Shopify apps, which can mean support is spread across multiple products. This is not a red flag, but it is a reason to evaluate carefully before committing for high-volume restock workflows.

Pros:

• Built for Shopify badge
• 28+ language support (widest in this comparison)
• Multi-location inventory controls explicitly supported
• Price drop alerts included alongside restock alerts
• Free plan with 50 email alerts and bulk export

Cons:

• 4.5-star rating is the lowest in this comparison
• Only 158 reviews vs. hundreds or thousands for top-ranked apps
• 14% lower rating share suggests more mixed merchant experiences
• Pro plan at $45/month is above mid-range pricing

Pricing:

• Free: 50 email alerts, unlimited requests, automatic notifications
• Email Only: $10/month - unlimited emails, multi-location, inventory controls
• Starter: $20/month + $0.10/SMS - unlimited emails, 200 SMS, analytics
• Pro: $45/month + $0.09/SMS - unlimited emails, 500 SMS, custom email addresses

7. Appikon: Back In Stock - Best for Quick Two-Minute Setup

Appikon, developed by Appikon Software Pvt Ltd, focuses on back-in-stock notification via email and SMS with an emphasis on fast setup. The app's listing promises a working integration in under two minutes with no coding required. The 4.7-star rating across 1,363 reviews is solid, with 93% five-star reviews, but a pattern of critical reviews about service outages, unresponsive support periods, and notification misfires keeps it at the bottom of this ranking.

Pricing and Value (7/10): The free plan provides only 10 emails per month, the most restrictive free tier in this comparison. SMS on the free plan costs $0.05 to $0.40 per message depending on country. Paid plans start at $19.99 per month (Starter, 300 emails), $29.99 per month (Pro, 1,000 emails), and $49.99 per month (Premium, 3,000 emails). This is the most expensive mid-tier pricing in this list, especially when compared to STOQ (similar features, lower price) or Kbite (far more affordable). The free plan is essentially a trial only.

Feature Richness (7.5/10): Appikon covers email and SMS back-in-stock alerts, waitlist functionality, analytics for customer demand, inventory tracking, performance reporting, Klaviyo and Mailchimp integration, and custom theme support. The Pro plan adds collection page integration, and the Premium plan adds countdown timers. The feature set is reasonable but not exceptional relative to the price.

Built for Shopify / Integration (6.5/10): Appikon does not hold the Built for Shopify badge, which is a meaningful differentiator compared to every other app in this list except Appikon itself. The lack of the badge means the app has not been certified against Shopify's performance, design, and integration standards. The app still integrates with Klaviyo, Mailchimp, PushOwl, Wiser, and Zapier, which covers the key email and notification marketing tools.

Ease of Use (8/10): The two-minute setup claim is backed up by merchant reviews, which describe the configuration process as straightforward and self-explanatory. A demo store is available to preview the experience before installing. For merchants who want a fast, no-configuration solution, Appikon does deliver on ease of initial setup.

Support and Reputation (7/10): The 4.7-star rating is respectable, and 93% of reviews are five stars. However, critical reviews describe serious service problems: a service outage lasting over a month with no support response, recurring notification misfires sending alerts for products still out of stock, and data export failures after years of use. These are not isolated complaints and represent real operational risks for stores that depend on restock notifications. Appikon's support responsiveness in positive reviews is praised warmly, but the pattern of unresponsiveness during crises is a concern.

Pros:

• Quick two-minute setup, no coding required
• Demo store available for previewing before install
• Integrates with Klaviyo, Mailchimp, Zapier, and PushOwl
• 1,363 reviews with 93% five-star rate overall

Cons:

• No Built for Shopify badge (only app in this list without it)
• Free plan limited to 10 emails per month
• Most expensive mid-tier pricing in this comparison
• Critical reviews report outages, misfires, and unresponsive support during problems
• Collection page integration requires Pro plan ($29.99/month)

Pricing:

• Free: 10 emails/month (SMS: $0.05-0.40/message)
• Starter: $19.99/month - 300 emails, Klaviyo/Mailchimp, custom themes
• Pro: $29.99/month - 1,000 emails, collection page integration
• Premium: $49.99/month - 3,000 emails, countdown timer

Which App Should You Choose?

The right back-in-stock app depends on what your store actually needs.

If you run preorders alongside back-in-stock alerts, choose STOQ. It is the only app in this list that handles both workflows at a genuinely high level, with native Shopify Checkout integration and 22 languages included.

If you are a small store and want the lowest cost, choose Kbite. The free plan covers unlimited subscribers with 30 emails per month. Paid plans start at $5 per month. The 3,856-review base at 5.0 stars gives you confidence that the app works as advertised over the long term.

If you want one app to handle back-in-stock, preorders, and wishlists, choose Notify Me!. It consolidates three distinct workflows into a single admin at a reasonable price and integrates with the most popular email marketing tools.

If push notifications are important for your store, choose Amp Back in Stock. It is one of the few apps in this category that delivers email, SMS, and web push notifications natively, without requiring a separate push notification app.

If branded email delivery matters and you want low-stock monitoring alongside restock alerts, choose Ordersify. The ability to send alerts from your own domain, combined with automatic low-stock reports, makes it a strong operational fit for stores that care about email deliverability and inventory management.

If your store stocks inventory across multiple locations, look more closely at SC Back in Stock. Its multi-location controls are explicitly developed, though you should account for the lower overall rating before committing.

If you want the fastest possible setup and have simple needs, Appikon delivers in under two minutes. Just be aware of the reliability concerns flagged in critical reviews before using it for high-volume or mission-critical restock workflows.

FAQ

What is the best Shopify back in stock app? The best Shopify back in stock app in 2026 is STOQ: Preorder, Back In Stock by Artos Software. It earns a 9.2/10 overall score based on a 5.0-star rating from 3,496 merchant reviews, Built for Shopify certification, competitive pricing from $0 to $69 per month, preorder and back-in-stock combined in one app, and consistently exceptional support.

Is there a free Shopify back in stock app? Yes. Several apps in this list offer free plans. Kbite's free plan includes unlimited subscribers and 30 email notifications per month. Ordersify's free plan includes 100 email notifications per month. STOQ's free plan includes 10 preorders and 30 email alerts per month. SC Back in Stock's free plan includes 50 email alerts. Most free plans are limited by monthly notification volume rather than by features.

How do back in stock apps work on Shopify? Back in stock apps add a "Notify Me" button to product pages when inventory reaches zero. When a shopper clicks the button and submits their email address (and optionally their phone number), the app stores that contact. When the store owner restocks the product and inventory rises above zero, the app automatically sends an email, SMS, or push notification to everyone on the waitlist for that product.

Do Shopify back in stock apps support SMS notifications? Yes. Most apps in this list support SMS notifications in addition to email. STOQ, Notify Me!, Amp Back in Stock, Ordersify, and SC Back in Stock all support SMS. SMS costs are typically charged per message and vary by destination country. Apps like Kbite charge from $0.02 per SMS. Amp charges $0.015 per SMS. Some apps include SMS within their plan pricing.

What is the Built for Shopify badge for back in stock apps? The Built for Shopify badge is awarded by Shopify to apps that meet its highest standards for performance, design, privacy, and integration. It means the app uses Shopify's native extensions (Theme App Extensions, App Blocks, Shopify Checkout, Customer Accounts) properly and does not rely on workarounds. In this comparison, every app except Appikon holds the badge. The badge is a useful quality signal when evaluating unfamiliar apps.

Can Shopify back in stock apps send alerts for specific product variants? Yes. Most back in stock apps support variant-level alerts, meaning customers can subscribe to a specific size, color, or configuration of a product rather than the product as a whole. STOQ, Kbite, Notify Me!, and Amp Back in Stock all support variant-specific restock subscriptions. This is especially important for fashion, footwear, and other stores where a specific size or color drives the purchase intent.

How much do Shopify back in stock apps cost? Costs range from free to $99 per month depending on the app and your notification volume. The most affordable paid option is Kbite at $5 per month for 500 email notifications. STOQ starts at $10 per month for 1,000 alerts. Most apps use a tiered pricing model where higher monthly fees unlock more notifications per month or unlimited sending. SMS is almost always billed separately per message.

Can back in stock apps integrate with Klaviyo or Mailchimp? Yes. STOQ, Notify Me!, Amp Back in Stock, Ordersify, and Appikon all integrate directly with Klaviyo and Mailchimp. Kbite's direct ESP integrations are available on the Pro plan. SC Back in Stock integrates with Klaviyo, Mailchimp, and Dotmailer. Klaviyo integration is particularly valuable for stores that want to trigger restock alerts as part of a broader email marketing automation flow.

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