Companies Using Stamped

I went through Stamped in our September 2026 crawl expecting a routine Shopify app, and the first pass didn't look like one. Stamped's review script loads from stamped.io, and the app also defines a JavaScript function of its own; a domain counts when either shows up. About one in five live domains carrying that code turned out not to be a store. With those removed, 19,160 store domains run Stamped, and 7,980 of them (41.6%) match a company record. Everything below is computed on that clean set.

A network of copied pages

Page titles gave it away first: 2,044 Stamped domains carried Indonesian gambling names, togel and slot sites on short, expired domains. Each was a copy of a real Shopify store's page, and the copy kept the store's Stamped script. The copies also shared a stack no real store has, the same seven unrelated scripts on almost every one. Counting that stack instead of the titles found about 4,600 network domains. We opened 20 without a gambling title and none was a store; from the remainder, 28 of 29 random domains were real shops loading Stamped.

Sales signal: an uncleaned Stamped list carries roughly one gambling page for every four real stores. Check a sample before you load any list into a sequence.

One reading, no trend line

The usage chart shows a single September point. Our earlier monthly totals include the network, whose domains appeared from March onward, so joining them to today's clean figure would draw the network's growth rather than Stamped's. The domains we crawl also turn over every month, dead sites out and new ones in, which moves any line by itself. Exits we can count: 2,429 store domains dropped Stamped since we began tracking it in March 2026.

"About one in five domains carrying Stamped's code was a gambling page copied from a real store. With those gone, Stamped is a mid-sized Shopify review app whose customers mostly predate 2020." - David Thomson, CTO at TechnologyChecker.io

Sales signal: with no trend line to lean on, treat Stamped's base as a steady pool of about 19,000 stores and don't sell it internally as a fast-growing segment.

Who the customers are

69.31% of matched companies with a known size have 1 to 10 employees and 23.24% have 11 to 50. Age says more. 54.30% were founded in the 2010s and only 17.18% in the 2020s. Loox (33.65%) and Judge.me (35.05%) have about twice that share of young brands, and Yotpo Reviews (16.97%) looks like Stamped. One plausible reason is price: Stamped no longer has a free plan, and a brand-new store usually starts on one. Our data can't prove that.

The large accounts are few, 23 companies above 1,000 employees, and 16 of the 50 named companies run Stamped on a subdomain: SRAM on shop.sram.com, Barry's on shop.barrys.com, LIV Golf on shop.livgolf.com. Nine West, Jones New York and Sa Sa run it on the main store.

Sales signal: the typical buyer is a founder or a small e-commerce team at a brand that has sold online for years. At the big names, find whoever runs the merchandise shop.

Where they sell

The United States has 4,192 matched companies, 53.92% of those with a known country, followed by the United Kingdom (730), Australia (702) and Canada (557). English-speaking countries hold about four in five. France (136) is the largest market outside them, with Saint James and Labo SVR on the list. Retail (16.30%) and apparel (10.23%) lead the industries, and wellness and personal care come next.

Sales signal: an English-language, US-led base. France is the only other country above 100 matched companies, enough for a small localised campaign.

Stamped and Judge.me side by side

2,191 Stamped stores (11.44%) also run Judge.me, more than run Trustpilot (757), Yotpo Reviews (696) or Loox (399). There is a lean. Since March, 388 domains that dropped Stamped now run Judge.me, against 73 that dropped Judge.me and kept Stamped, and for Okendo it's 76 against 1. Neither passes our switching tests, because most stores that ever had both still have both: 79.4% for Judge.me and about two thirds for Okendo. So this page has no migration table.

"When a Stamped store moves to another review app, it's most often Judge.me. Most never move at all: four in five stores that ever ran both still do." - David Thomson, CTO at TechnologyChecker.io

Sales signal: a store running Stamped and Judge.me pays for two review apps, and when one goes it's more often Stamped. For Stamped's own team those 2,191 stores are a retention list. For anyone selling against Stamped, consolidation is the pitch.

The store stack

Shopify runs on 92.8% of Stamped store domains. The rest include WooCommerce and BigCommerce stores, which Stamped's help centre says it still supports for existing installs but no longer takes as new ones. On email, Klaviyo sits on 50.09%. Mailchimp is on 15.75%, more than twice its share on Loox stores (6.62%). Facebook Pixel runs on 69.07% and TikTok Pixel on 19.12%. Smile, on 7.72%, is the most common loyalty app here, although Stamped sells loyalty in the same app.

Sales signal: about one Stamped store in six still emails through Mailchimp. For a Klaviyo partner or an email agency, that's a ready list of established brands on a general-purpose email tool.

What merchants say

On the Shopify App Store, Stamped Reviews & Loyalty rates 4.7 out of 5 from 3,751 reviews and carries the Built for Shopify badge (27 September 2026). The listing starts at $23 a month for 200 orders, and Stamped's help centre says the free Starter plan is gone. Judge.me, the other app on those 2,191 shared stores, rates 5.0 from 47,558 reviews and still has a free plan. Our data can't tie price to any single removal.

Sales signal: price is the easy line against Stamped at small order volumes, where Judge.me, Yotpo and Okendo all have free plans. Stamped's own case is reviews and loyalty in one app.

Key takeaways

1. 19,160 store domains after removing about 4,600 copied gambling pages; 13th of 139 in Reviews & Ratings.

2. 92.8% Shopify, and new installs are Shopify-only.

3. 69.31% of matched companies have 10 or fewer staff, but only 17.18% were founded in the 2020s.

4. 2,191 stores run Judge.me as well. Exits lean to Judge.me (388 against 73), yet 79.4% keep both.

5. Half the base emails through Klaviyo, and 15.75% through Mailchimp.

How to use this list

Filter by country and company size, and skip any domain whose page isn't a store. For the full list of 19,160 Stamped store domains with company, size and stack data, explore TechnologyChecker.io. Our Shopify analytics report covers the wider app picture.