Google Customer Review
14,892 websites

Google Customer Review is free to use

https://support.google.com/merchants/answer/7188525?hl=en

Google Customer Reviews is a free program that lets you collect feedback from users who’ve made a purchase on your site. Ratings from Google Customer Reviews apply to your seller ratings eligibility. Seller ratings appear on Search Ads, in ...

VS

Stamped
23,686 websites

Stamped offers both free and paid options

https://stamped.io/

Stamped.io is a User Generated Content platform for commerce websites. It allows users to collect genuine reviews of products, with automated survey and in-email forms, so customers experience a simple and easy reviews process, right from t...

Market Share by Top Websites

1 Stamped is leading in Top 1M Sites and The Entire Web.

2 Google Customer Review is leading in Top 10K Sites and Top 100K Sites.

Websites Categories

1 Stamped has better usage coverage in more websites categories. Including Lifestyle, Food & Drink, Sports, Health and 12 other categories.

2 Google Customer Review is leading in Home & Garden, E-commerce & Shopping, Vehicles, Computers Electronics & Technology and 4 other categories.

Geography

1 Stamped is leading in most countries, including United States, United Kingdom, Australia, Canada and 99 other countries.

2 Google Customer Review is leading in Brazil, Poland, Germany, France and 30 other countries.