11 Best Shopify Back-in-Stock Apps in 2026

When a product goes out of stock, you lose more than that sale. Plenty of shoppers won't wait for a restock; they head to a competitor and buy the same thing elsewhere, and often don't come back. A back-in-stock app captures that demand before those shoppers leave by letting them subscribe for an alert, then notifying them automatically once inventory returns.

This guide compares the 11 best Shopify back-in-stock apps, with pricing, ratings, and what each one actually does well (and where it falls short).

How To Find Any Shopify Store Apps With Koala Inspector

visit any shopify store

Click Koala inspector

See the stores apps

11 Best Shopify Back-in-Stock Apps

Rank	App	Developer	Price	Rating	Description
1	Notify! Back in Stock	Notify Me!	Free trial	4.9 (2,038)	Preorders and restock alerts for customer convenience.
2	Back in Stock: Restock Alerts	Back in Stock	Free trial	4.8 (858)	Notify customers when products are available again.
3	KB Back In Stock Restock Alert	CartBite	Free trial	5.0 (2,291)	Boost sales with stock alerts and email notifications.
4	Stoq	Artos Software	Free trial	5.0 (1,078)	Automatic alerts for restocked products to drive sales.
5	PreOrder Globo	Globo.io	Free trial	4.9 (1,367)	Preorder and waitlist management to maximize sales opportunities.
6	Appikon	Stock alerts	Free trial	4.8 (2,005)	Keep customers informed with instant back-in-stock notifications.
7	Swym Back in Stock Alerts	Swym Corporation	Free trial	4.8 (661)	Customer wishlists with alerts for back-in-stock items.
8	Yanet	Yanet	Free trial	4.8 (27)	Manage back-in-stock alerts for better inventory control.
9	StokUp	Channelwill	Free plan	4.8 (486)	Restock email alerts for customer re-engagement.
10	Pre‑Order | Restock Notifier	Blessify Infotech	Free	4.7 (48)	Real-time notifications to update customers on restocks.
11	Back in-Stock Restock Alert ZA	Zooomy	Free trial	4.9 (193)	Simple restock alerts to re-engage potential buyers.

1. Notify! Back in Stock | PreOrder

Notify! Back in Stock is the most reviewed preorder and restock app on the Shopify App Store, with over 2,100 reviews and a 4.9-star rating. It places a notification button on out-of-stock product pages and sends email or SMS alerts when inventory returns.

The standout feature for dropshippers is preorder support: customers can place an order before you have inventory, which tells you exactly how much to source and lets you generate revenue upfront.

• Developer: Notify Me!
• Price: Essentials ($19.90/month), Pro ($39.90/month), Premium ($69.90/month). Free trial available.
• App Type: Pre-orders and restock alerts.
• Rating: 4.9 (2,100+)

App Features

• Email and SMS notification templates you can customize to match your store branding.
• Preorder functionality for out-of-stock products, with configurable messaging.
• Analytics dashboard showing subscriber counts, open rates, and conversion from alert to purchase.

Install is about as easy as the category gets; most merchants have their first alert live inside half an hour. The plan tiers stretch from a side-project store up to high-volume Shopify Plus, and the Klaviyo and Mailchimp hooks mean a restock subscriber can be pulled into your wider email program instead of getting one alert and disappearing. The downside is cost: the trial is short and the paid plans sit above several apps further down this list. It earns the price for dropshippers whose products sell out often and who want preorders capturing demand rather than watching shoppers walk.

2. Back in Stock: Restock Alerts

Back in Stock: Restock Alerts is one of the original dedicated restock apps on Shopify. It handles the core job well: display a notification sign-up button on out-of-stock product pages, collect email or SMS addresses, and send automated alerts when stock returns.

• Developer: Back in Stock Team.
• Price: Free plan available; paid plans start at $19/month.
• App Type: Restock alerts.
• Rating: 4.8 (850+)

App Features

• Automated email and SMS alerts that fire when inventory is updated in Shopify.
• Multi-language support, useful for stores selling across different regions.
• Analytics for tracking how many alerts were sent, opened, and clicked.

Being one of the original restock apps shows in how little fuss it takes. The widget and email templates customize well, and support has a reputation for turning issues around quickly. What it gives up is breadth: the third-party integration list is shorter than category leaders like Notify! or Swym, though it does support Shopify Flow and the major email and SMS services. Paid plans start at $19/month over the free tier. If your goal is reliable alerts without a learning curve, and you don't need to plug into a dozen other tools, it covers the job for a small or medium store.

3. KB Back In Stock Restock Alert

KB Back In Stock Restock Alert by CartBite has accumulated over 2,300 reviews with a 5.0 rating, making it the highest-rated app on this list by review count. It covers the usual email and SMS notifications but also adds push notifications, which can reach customers who haven't opened their email.

• Developer: CartBite
• Price: Free plan available; premium plans from $15/month.
• App Type: Restock alerts.
• Rating: 5.0 (2,300+)

App Features

• Push notifications in addition to email and SMS, broadening your alert reach.
• Klaviyo and Mailchimp integration for syncing subscribers with your marketing lists.
• Customizable notification templates.

Three notification channels is the headline here. Push sits alongside email and SMS, so an alert can reach a customer who never opens their inbox, and the free plan lets a new store test all of it before paying. The honest weakness: reporting is basic. You get alert counts but limited data for deeper conversion analysis, so once you actually want to measure which restocks drove revenue, you'll feel the ceiling. It connects to Klaviyo, the usual SMS platforms, and Shopify's native analytics. Start here for free multi-channel alerts; budget for a switch if detailed reporting becomes the thing you need most.

4. Preorder, Back In Stock - Stoq

Stoq combines preorder management with back-in-stock notifications in one app. For stores that regularly sell products before they arrive in stock, that combination avoids paying for two separate apps.

It also integrates with Shopify POS, which matters if you run both an online store and a physical retail location.

• Developer: Artos Software
• Price: Free starter plan; paid plans available with higher notification volumes.
• App Type: Preorders and restock alerts.
• Rating: 5.0 (1,078+)

App Features

• Multi-channel notifications across email and SMS.
• Preorder mode for out-of-stock products with configurable checkout flow.
• Shopify POS integration for unified inventory across online and physical locations.

Running preorders and restock alerts from one dashboard cuts the overhead of paying for and switching between two apps. The feature that separates Stoq from most of this list is the Shopify POS sync, which keeps inventory consistent across an online store and a physical till. That makes it a real omnichannel tool rather than a pure online play. The notification widget is less customizable than some rivals. It fits medium and larger stores with frequent stockouts, or anyone juggling preorders and restocks who wants them in one place.

Integration with Shopify Apps

Integrates with Shopify POS and connects with inventory management tools that support the Shopify API.

5. PreOrder Globo | Back in Stock

PreOrder Globo by Globo handles both preorders and back-in-stock alerts. The free plan covers the first 20 presale orders or restock emails per month, which is enough for stores just testing the feature. Paid plans start at $9.90/month, making it the most affordable multi-function option on this list.

• Developer: Globo
• Price: Free plan (first 20 presale orders or restock emails); paid plans from $9.90/month.
• App Type: Preorders and restock alerts.
• Rating: 4.9 (1,300+)

App Features

• Email, SMS, and push notification support.
• Customizable notification templates that adapt to your store's theme colors and fonts.
• Shopify Flow compatibility for building automations around stock events.

At $9.90/month, this is the cheapest entry among the apps that do both preorders and restock alerts, and the widget drops into most themes without clashing. The trade-off is at the top end: as order volume rises, the plan cost climbs faster than a single-function app would. So it suits a store that wants preorder and restock in one tool without spending much early, or a store with a large, engaged list that needs real-time availability updates. It plays with Omnisend and CRM tools for customer tracking and supports Shopify Flow for stock-event automations.

6. Appikon - Back In Stock

Appikon focuses on customer segmentation. Rather than blasting every subscriber at once when a product restocks, it lets you target notifications based on browsing history and other customer attributes, so alerts go to the shoppers most likely to convert.

• Developer: Appikon Software
• Price: Free plan; paid plans from $19.99/month.
• App Type: Restock alerts.
• Rating: 4.8 (2,000+)

Segmentation is the whole pitch, and at $19.99/month it's a genuine differentiator: instead of one blast to every subscriber, you target the shoppers most likely to buy based on browsing history. Support runs around the clock. The reporting dashboard is basic, which bites when you want to compare conversion across the segments you just built. Appikon pays off for stores with a subscriber list big enough that targeting actually changes the numbers; below that, the segmentation is effort without much return. It connects to Klaviyo and SMSBump for campaigns and syncs with inventory tools for live stock data.

7. Swym Back in Stock Alerts

Swym's Back in Stock Alerts app combines wishlist functionality with restock notifications. Shoppers can save items to a wishlist and receive an alert when those products are restocked, which catches both browsing-phase and intent-to-buy customers.

Swym is built for international stores, with multi-language support and Shopify Plus compatibility for high-volume operations.

• Developer: Swym Corporation
• Price: Free plan; Start plan $19.99/month; Pro plan $59.00/month.
• App Type: Restock alerts and wishlists.
• Rating: 4.8 (660+)

App Features

• Wishlist feature that doubles as a demand-signal tool, showing which products shoppers are waiting on.
• Multi-language support for international storefronts.
• Advanced analytics covering notification performance, click-through, and ROI.

The wishlist is what makes Swym worth more than a plain alert app: every saved item is a demand signal you can plan inventory around, not just a name on a notify list. It carries Shopify Plus support and deeper reporting than most apps at this tier. Price is the gate, with the Pro plan at $59/month out of reach for many small stores, though there's a free plan and a $19.99 Start tier below it. It's built for international stores and high-volume Shopify Plus merchants who want the wishlist data, and it's overkill for a shop with a few dozen SKUs. Integrations cover Shopify analytics, major marketing tools, and Plus features like custom checkout flows.

8. Yanet: Back in Stock Alerts

Yanet covers the basics well at a price that undercuts most of the market. The free plan is functional, and premium plans start at $3.99/month, well below the typical $15-20 starting point for most apps here.

• Developer: Yanet Team
• Price: Free plan available; premium plans from $3.99/month.
• App Type: Restock alerts.
• Rating: 4.8 (27)

App Features

• Email and SMS notifications for back-in-stock products.
• Customizable templates for both the notification widget and the outgoing alert message.

At $3.99/month, Yanet is the cheapest paid plan on this list, and the interface is quick to set up and uncluttered. You're trading away the extras: no advanced segmentation, no detailed analytics, and a small review count (27) that means thin community feedback if you hit an edge case. Integrations are basic, limited to Shopify's email tools and SMS platforms. None of that matters much for a new store with a small catalog and a list that's still growing, which is exactly who it's for: the core restock feature at close to the lowest cost you'll find.

9. StokUp Notify Me Back in Stock

StokUp offers a free plan and a pro plan starting at $5.90/month, putting it near Yanet on price but with slightly more detail in its analytics. The setup is fast, and the interface is clean enough that most merchants don't need to consult documentation.

• Developer: Channelwill
• Price: Free plan; Pro plan from $5.90/month.
• App Type: Restock alerts.
• Rating: 4.8 (490+)

App Features

• Real-time stock status updates that trigger alerts when Shopify inventory changes.
• Customizable email templates to match your store design.
• Basic analytics showing alert send volume and open rates.

StokUp lands right next to Yanet on price ($5.90/month Pro over a free plan) but puts a little more detail into its analytics. A non-technical owner can set it up without help. The honest knock is breadth: the feature set is thinner than some competitors at the same or slightly higher price, and it lacks deeper external integrations like Klaviyo, though it does connect to Shopify's marketing tools and sync inventory in real time. If you want straightforward email restock alerts and don't need multi-channel or segmentation, it's a fine pick for a small or medium store.

10. Pre-Order | Restock Notifier

Pre-Order | Restock Notifier by Blessify Infotech handles both preorders and restock alerts. The free plan is genuinely functional, not just a demo, and the premium plan starts at $4.99/month.

The app supports multi-channel notifications across email, SMS, and push, covering more channels at a lower price point than most alternatives.

• Developer: Blessify Infotech
• Price: Free plan with premium starting at $4.99/month.
• App Type: Restock alerts and preorders.
• Rating: 4.7 (48)

The unusual part is what you get for $4.99/month: email, SMS, and push together, when most apps at that price hand you email alone. That breadth costs setup time, though. Configuration takes longer than the simpler apps here, so expect a short ramp before everything's dialed in. It makes sense for a store with customers active across several channels that wants to cover all three without buying separate apps for each. It supports HubSpot and CRM tools for customer communication and connects to Shopify Flow for automation.

11. Back in-Stock Restock Alert ZA

Back-in-Stock Restock Alert ZA by Zooomy is a straightforward restock alert app that covers email and SMS, with a free plan and a pro plan at $5.99/month. Multi-language support makes it worth considering for stores targeting non-English markets.

• Developer: Zooomy
• Price: Free plan; Pro plan from $5.99/month.
• App Type: Restock alerts.
• Rating: 4.9 (193)

App Features

• Automated email and SMS alerts triggered by stock changes.
• Multi-language support for stores serving international customers.
• Customizable notification templates to match your store's branding.

Zooomy keeps it simple: email and SMS alerts, a working free tier, a $5.99/month Pro plan, and a short path to your first alert. The integration list is limited next to higher-tier apps like Swym or Notify!, and it sticks to Shopify's native analytics and inventory tools. The reason to single it out is multi-language support, which most apps at this price skip. If you sell into non-English markets and want a low-cost restock app that talks to customers in their own language, that's the one feature that puts Zooomy ahead of the cheaper alternatives above.