The 10 Best Baback Apps for Shopify

The top 10 apps merchants see when they search the Shopify App Store for baback, in the exact order the store ranks them. Only Shopify's organic ranking is shown, never sponsored ads.

Updated September 7, 2026 · Organic ranking

Shopify 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.

  1. 1 Baback ‑ Post purchase logo

    Baback ‑ Post purchase

    5.0 (6 reviews) · Free

    All the post-purchase up to the WMS: returns, exchanges, vouch

  2. 2 Regulo – Invoice & Export logo

    Regulo – Invoice & Export

    5.0 (30 reviews) · Free trial available

    Automated, compliant invoicing for France & the EU.

  3. 3 Preorder, Back In Stock ‑ STOQ logo

    Preorder, Back In Stock ‑ STOQ

    5.0 (3,666 reviews) · Free plan available

    Grow sales with preorders, 'notify me' & back in stock alerts

    Built for Shopify
  4. 4 Preorder, Back In Stock REZ logo

    Preorder, Back In Stock REZ

    5.0 (1,517 reviews) · Free plan available

    Do Pre order, notify me, back in stock alert backorder presale

    Built for Shopify
  5. 5 Back In Stock,Notify Me: Kbite logo

    Back In Stock,Notify Me: Kbite

    5.0 (4,092 reviews) · Free plan available

    Back in Stock alert & Restock alert for Out-of-Stock Waitlists

    Built for Shopify
  6. 6 Notify Me! Back in Stock Alert logo

    Notify Me! Back in Stock Alert

    4.9 (3,739 reviews) · Free plan available

    Waitlist, preorder, wishlist and low stock - all in one app.

    Built for Shopify
  7. 7 PreOrder Globo | Back in Stock logo

    PreOrder Globo | Back in Stock

    4.9 (1,918 reviews) · Free plan available

    Drive sales with Pre-order and Restock Alert

    Built for Shopify
  8. 8 Essent Preorder Back in Stock logo

    Essent Preorder Back in Stock

    5.0 (1,255 reviews) · Free plan available

    Pre-order manager & presale with back in stock alert waitlist

    Built for Shopify
  9. 9 Preorder, Back in stock Duck logo

    Preorder, Back in stock Duck

    5.0 (512 reviews) · Free plan available

    Create presales, backorders & 'notify me' restock waitlists

    Built for Shopify
  10. 10 SyncTo Fastmag logo

    SyncTo Fastmag

    5.0 (17 reviews) · $178.60/month

    HomeMade.IO - Connect and synchronize Fastmag Boutique

Compare the top 3 head-to-head

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What to look for in a Baback 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 Baback app for Shopify?

Based on the Shopify App Store's own organic ranking for "baback", Baback ‑ Post purchase currently holds the #1 spot, with a 5.0 star rating across 6 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 "baback", 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 "baback", you can verify the current ranking there yourself.

Which Baback apps are Built for Shopify?

7 of the top 10 baback apps hold the Built for Shopify badge: Preorder, Back In Stock ‑ STOQ, Preorder, Back In Stock REZ, Back In Stock,Notify Me: Kbite, Notify Me! Back in Stock Alert, PreOrder Globo | 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 September 7, 2026, the top-ranked baback app on the Shopify App Store is Baback ‑ Post purchase, with a 5.0 star rating across 6 reviews. 7 of the top 10 carry the Built for Shopify badge, and the average rating is 5.0 stars across 16,752 reviews.

Related keyword rankings

All Baback rankings →   ·   Browse all keywords →

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.

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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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