Who uses Amp Back in Stock & Preorder +?

Amp stores are large and upmarket for the category. About 20% of them run Shopify Plus, roughly 4.5x the Shopify-wide rate. That is more than twice the share for Kbite (about 9%) and Notify! (about 8%), and well above STOQ (13%). Among stock alert apps, Amp is the one most associated with established brands.

The median Amp store lists 154 products, larger than Kbite's 142 and far above Notify! (57) and STOQ (64). A big range with many sizes and colors means more variants selling out at any given moment, which is when restock alerts capture demand that would otherwise be lost. The median store runs 9 apps, a fairly focused stack for a store of this size.

Amp has a strong US base: about 41% of its stores are in the United States, against about 28% for Kbite. The United Kingdom follows at about 10%, then Australia at 9.5%, Canada at 6% and Japan at about 5%. Japan does not appear in the top markets of the other stock alert apps we profile, and a Japanese-language back in stock app also shows up far more often than average on Amp stores, so Amp has a real following among Japanese merchants.

By category, fashion brands lead at 27%, followed by business and industrial stores at 17%, then food and drink and technology at about 6% each. Fashion is the classic restock use case: popular sizes sell out first, and drops and limited runs create waiting lists.

The apps that show up next to Amp describe a mid-market fashion or lifestyle brand. Amp stores run Rise gift cards and store credit and the Gorgias helpdesk 4.6x more often than the average Shopify store each. Swym Wishlist Plus appears 4.2x more often, Yotpo reviews 3.6x more often and Smile loyalty 3.4x more often.

Wishlists and restock alerts are closely related: both capture shopper intent on products they cannot or will not buy yet, and both feed email and SMS flows later. Gorgias, Yotpo and Rise are paid tools typical of brands with support and retention teams, which matches Amp's high Plus share.

Amp vs Kbite Back in Stock

Kbite is the most reviewed back in stock app in this group and the low-cost option, with paid plans from $5 a month. Its stores have similar catalog sizes (median 142 products) but run Shopify Plus less often (about 9%), and 72% are outside the United States. Choose Kbite for price, Amp for a store base that skews toward larger brands.

Amp vs Notify! Back in Stock

Notify! combines back in stock alerts and preorders, like Amp. Its stores are much smaller (median 57 products) and about 8% run Plus. Its paid plans start at $9.90 a month, about half of Amp's entry price.

Amp vs STOQ

STOQ (Preorder, Back In Stock) leans more toward preorders. Its stores list a median of 64 products, about 13% run Plus, and its paid plans start at $10 a month.

Other options

Appikon, Ordersify, CWILL and Swym Back in Stock Alerts are other restock alert apps, and Swym's version pairs with its wishlist app.

Amp has a free plan, then Starter at $19 a month, Growth at $49 and Pro at $99. Its entry price is the highest among the stock alert apps we compare: Kbite starts at $5, Notify! at $9.90 and STOQ at $10. That premium lines up with Amp's larger, more Plus-heavy store base.