| App | Installs | Publisher | Publisher Email | Publisher Social | Publisher Website |
| 18M | Banco Digital Digio | *****@digio.com.br |    | http://digio.com.br/ | |
| 17M | Wix | *****@wix.com |  | http://www.wix.com/ | |
| 16M | WW INTERNATIONAL, INC. | *****@ww.com | | http://www.weightwatchers.com/ | |
| 14M | Blizzard Entertainment, Inc. | *****@blizzard.com | | https://battle.net/support/games/arclight | |
| 13M | Shutterfly, Inc | *****@shutterfly.com | | https://www.shutterfly.com/mobile | |
| 13M | Manchester United Limited | *****@manutd.co.uk | | http://www.manutd.com/ | |
| 11M | True Digital & Media Platform Company Limited | *****@gmail.com | | https://connect.truevirtualworld.com/ | |
| 10M | Keeper Security, Inc. | *****@keepersecurity.com | | https://keepersecurity.com/ | |
| 9M | Victoria's Secret Mobile App | *****@victoriassecret.com | | http://www.victoriassecret.com/contact/ | |
| 8M | StepsApp | *****@steps.app | | https://steps.app/ |
Full list contains 2K apps using TestFairy in the U.S, of which 1K are currently active and 320 have been updated over the past year, with publisher contacts included.
List updated on 4th May 2024
The TestFairy SDK is a Analytics SDK provided by Sauce Labs Inc.. By integrated this SDK, apps have the capabilities of A/B Testing.
A breakdown of countries and app categories used by TestFairy apps.
Most popular TestFairy alternatives in 2024.
| SDK | Apps Integrated | Provider |
| 922 | Leanplum, Inc. | |
| 650 | Optimizely, Inc. | |
| 327 | Taplytics Inc. | |
| 316 | Apptimize, Inc. | |
| 36 | 神策网络科技(北京)有限公司 | |
| 5 | Marketo, Inc | |
| 2 | 北京球球趣玩科技有限公司 |
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