Shopify · Restock & pre-order

Preorder, Back in stock Duck review

Ranked 8 of 8 among Shopify back-in-stock & pre-order apps by merchant reviews.

Best for: Markets where WhatsApp restock alerts outperform email.
5.0 (477) Free plan available by Duck
View on the Shopify App Store Compare all 8 back-in-stock & pre-order apps

Listing data checked 23 August 2026

Strengths and trade-offs

What it does well
  • WhatsApp alerts reach markets where email open rates are weak
  • 5.0 average
Trade-offs
  • Under 500 reviews
  • WhatsApp messaging has its own per-message costs and template rules

What "Free plan available" actually means

A free tier with usage or feature caps, and a paid upgrade above them. The most predictable model in this category: you can see the wall before you hit it, and the free tier is usually enough for a small store.

Whatever the label says, the calculation is the same: a back-in-stock & pre-order app has to lift revenue by more than it costs. Our break-even calculator works out the lift you would need against your own orders and margin — for most stores it is a fraction of a percent, which means the subscription is rarely the real question. The payload the app adds to every page load usually is.

Head to head

Preorder, Back in stock Duck vs our category pick

How it lines up against Back In Stock, Notify Me: Kbite, which we rank first for back-in-stock & pre-order apps.

AppRating ReviewsPricingBest for
Preorder, Back in stock Duck 5.0 477 Free plan available Markets where WhatsApp restock alerts outperform email
Back In Stock, Notify Me: Kbite 5.0 3,882 Free plan available Pure restock waitlists without pre-order complexity
Alternatives

The closest alternatives to Preorder, Back in stock Duck

Every back-in-stock & pre-order app we index, ranked by the weight of merchant feedback behind it. Variant-level waitlists is usually the axis that decides between them.

AppRating ReviewsPricingBest for
Back In Stock, Notify Me: Kbite 5.0 3,882 Free plan available Pure restock waitlists without pre-order complexity
Notify Me! Back in Stock Alert 4.9 3,575 Free plan available Getting a wishlist alongside waitlists and pre-orders
Preorder, Back In Stock — STOQ 5.0 3,523 Free plan available Stores that need waitlists and pre-orders from one app
Preorder Now Presale Timesact 5.0 1,957 Free plan available Structured presale campaigns with deposits and clear ship dates
PreOrder Globo | Back in Stock 4.9 1,840 Free plan available Merchants already running other Globo apps

Full back-in-stock & pre-order ranking with buying criteria

FAQ

Preorder, Back in stock Duck: common questions

Is Preorder, Back in stock Duck free?
Free plan available on the Shopify App Store. A free tier with usage or feature caps, and a paid upgrade above them. The most predictable model in this category: you can see the wall before you hit it, and the free tier is usually enough for a small store.
How well rated is Preorder, Back in stock Duck?
5.0 out of 5 from 477 ratings, checked 23 August 2026. That is 3% of merchant reviews across the 8 Shopify back-in-stock & pre-order apps we index, and 12% of the category leader's total. Ratings in this category cluster tightly between 4.9 and 5.0, so the size of the review base tells you more than the average does.
What are the best alternatives to Preorder, Back in stock Duck?
The closest alternatives in the same category are Back In Stock, Notify Me: Kbite, Notify Me! Back in Stock Alert, Preorder, Back In Stock — STOQ. If you want the safest default, Back In Stock, Notify Me: Kbite is our pick for this category.
How we assess apps. Ratings, counts, pricing labels and — where the marketplace publishes one — the vendor name come from the public Shopify App Store listing and carry the date they were checked. The verdict, the "best for" line and the trade-offs are our editorial judgement. We take no money from any vendor listed here — full methodology.