The 10 Best Back In Stock Apps for Shopify
The top 10 apps merchants see when they search the Shopify App Store for back in stock, in the exact order the store ranks them. Only Shopify's organic ranking is shown, never sponsored ads.
Updated October 10, 2026 · Organic rankingShopify gives a variant one lever when stock runs out, and it is a switch rather than a feature: customers can keep buying it, or they cannot. Choose the second and the storefront simply refuses, with nowhere for a shopper who still wants the thing to leave their name. There is no waitlist object in Shopify and no per-product signup; the only native way to collect an address with marketing consent is the theme's newsletter form, which knows nothing about which product somebody was looking at.
These apps fill that in, and what they collect is worth as much as what they send. A waitlist is a demand list: it tells you which variant, in which size, how many people and for how long, which is the one piece of information a stockout otherwise destroys. Expect the same listings to also offer preorder, because Shopify's own feature tags place the two side by side, and be clear which you want. An alert asks the shopper to come back later. A preorder takes their money now.
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1
Notify Me! Back in Stock Alert
Waitlist, preorder, wishlist and low stock - all in one app.
Built for Shopify -
2
Back In Stock,Notify Me: Kbite
Back in Stock alert & Restock alert for Out-of-Stock Waitlists
Built for Shopify -
3
Preorder, Back In Stock ‑ STOQ
Grow sales with preorders, 'notify me' & back in stock alerts
Built for Shopify -
4
REZ Preorder, Back In Stock
Recover sales with pre order, notify me & back in stock alert
Built for Shopify -
5
Essent Preorder Back in Stock
Pre-order manager & presale with back in stock alert waitlist
Built for Shopify -
6
Amp Back in Stock & Preorder +
Back in stock alerts, preorders, wishlist & low stock badges
Built for Shopify -
7
Preorder, Back in stock Duck
Create presales, backorders & 'notify me' restock waitlists
Built for Shopify -
8
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9
CWILL Back in Stock Notify Me!
Customizable back in stock alerts for out of stock products
Built for Shopify -
10
Back in Stock Alert & Preorder
Back in Stock Alerts on Restock, Notify Me Waitlist & Preorder
Built for Shopify
Built for ShopifyCompare the top 3 head-to-head
What to look for in a Back In Stock app
- Which restock actually triggers the message
- The event these apps listen for is fired when a variant comes back into stock, and Shopify's own documentation notes that online channels are notified when the variant becomes available online. If your stock moves between locations, arrives through point of sale, or sits at a warehouse you do not sell from, ask specifically what counts as back in stock before the emails go out.
- Variant precision
- Somebody waiting for the medium in black does not want to hear that the small in white arrived. The alert has to be tied to the variant that was clicked, and the signup button has to follow the variant picker rather than sitting on the product.
- Email, text, and whose consent it is
- A back-in-stock alert is a message somebody asked for about one product, which is not the same as permission to add them to a newsletter. Check what the signup records, whether the address flows into your marketing list, and whether that is presented honestly to the shopper. Text messages raise the same question with a higher price attached.
- What you can read back
- The reporting is the underrated half. Signups per variant, over time, tell you what to reorder and how much, and that number is worth more than the recovered sales the alert itself produces.
- Whether the answer is preorder instead
- If the stock is genuinely coming, taking the order now removes the second visit and the race to the button. That is a different setup with different money in it, and many of these listings sell both, so it is worth deciding before you install rather than after.
Frequently asked questions
Which is the best Back In Stock app for Shopify?
Based on the Shopify App Store's own organic ranking for "back in stock", Notify Me! Back in Stock Alert currently holds the #1 spot, with a 4.9 star rating across 3,891 reviews. The best choice for your store still depends on your requirements, so compare the top results above.
How is this ranking determined?
We record the organic results merchants actually see when searching the Shopify App Store for "back in stock", refreshed daily. Shopify's own sponsored ("Ad") results are excluded, so positions reflect its real search ranking rather than paid promotion. Source: the Shopify App Store search results for "back in stock", you can verify the current ranking there yourself.
Which Back In Stock apps are Built for Shopify?
10 of the top 10 back in stock apps hold the Built for Shopify badge: Notify Me! Back in Stock Alert, Back In Stock,Notify Me: Kbite, Preorder, Back In Stock ‑ STOQ, REZ Preorder, Back In Stock, Essent Preorder Back in Stock and more.
What does the Built for Shopify badge mean?
Built for Shopify
Built for Shopify is the highest level of recognition Shopify awards an app. To earn
the badge, an app must meet Shopify's standards for safety, performance, ease of use,
and proven usefulness: it cannot slow down the admin, storefront, or checkout, must
integrate seamlessly into the Shopify admin, and must demonstrate quality through
installs, reviews, and ratings over time. When comparing similar apps, preferring
ones with the badge is a safe default.
Learn more about the Built for Shopify badge →
As of October 10, 2026, the top-ranked back in stock app on the Shopify App Store is Notify Me! Back in Stock Alert, with a 4.9 star rating across 3,891 reviews. 10 of the top 10 carry the Built for Shopify badge, and the average rating is 5.0 stars across 18,930 reviews.
Related keyword rankings
Rank higher on the Shopify App Store
Rankbase helps Shopify app developers track keyword positions, analyze install click data, and optimize app listings to rank higher in the Shopify App Store.
Explore Rankbase →Built by Craftshift
Rankbase is made by Craftshift, a Shopify Partner building apps for product images, variants, and bulk catalog work. We built Rankbase to track the App Store rankings of our own apps first, then opened it to other developers, and this directory grew out of that work. The rankings on these pages are Shopify's own organic search results; we never edit them, including for our own apps.
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Rubik Variant Images & Swatch
Clean multiple variant images gallery & variant color swatches
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CS - Smart Bulk Image Upload
Save time with bulk upload images from Google Drive, Dropbox
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Rubik Combined Listings Swatch
Link products as variants w/ combined listings & color swatch
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CS - Export Product Images
Bulk export images, download product images to save time!