Referee Yellow card, Whistle
Ryouhei Azuma Utilities iPhoneiPadiPod touch
Referee Yellow card, Whistle is a free Utilities app for iPhone and iPad by Ryouhei Azuma. Rated 4.6/5 from 51 ratings. Requires iOS 15.6.
- Rating
- 4.6
- 51 ratings
- Price
- Free
- on the App Store
- Size
- 15 MB
- Age 4+
- Updated
- Jul 29
- 2026 · v2.4
Screenshots
About Referee Yellow card, Whistle
It is a simple referee application that can be used in sports etc. It can sound a whistle, can be used for sports refereeing, training, when you want to call something, pranks, etc. You can put out four kinds of cards of yellow card, red card, orange card, green card in full screen. It may be interesting to use it as a referee in sports games or when playing with friends. It is designed to be easy to use with a simple screen and functions, so please try it.
Ratings & reviews
4.6
51 ratings
What’s new
Version 2.4 · Updated July 29, 2026
Added cards you can set to any color you like.
App privacy
The developer, Ryouhei Azuma, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Crash Data, Performance Data
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
- Diagnostics: Crash Data, Performance Data
Used for: Third-Party Advertising
Alternatives to Referee Yellow card, Whistle
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Referee Yellow card, Whistle | 4.6 / 5 (51 ratings) | Free | July 29, 2026 | |
| Real Gun | 4.7 / 5 (919) | Free | Apr 24, 2026 | Compare |
| Coin Flip 3D: Coin Simulator | 4.8 / 5 (364) | Free | Oct 4, 2026 | Compare |
| Dog Whistler – Whistle Sounds | – | Free | Nov 30, 2023 | Compare |
| Number generator random, dice | 4.0 / 5 (46) | Free | Jul 15, 2026 | Compare |
| Real Madrid Keyboard | 4.7 / 5 (1,658) | Free | Dec 17, 2024 | Compare |
| Revolver Simulator ' | 3.9 / 5 (315) | Free | Jan 8, 2024 | Compare |