# Referee Yellow card, Whistle — judgment of something > Digital referee toolkit with whistle and colored cards for sports and games. (iPhone/iPad app by Ryouhei Azuma.) - Source: https://appshunter.io/ios/app/referee-yellow-card-whistle/id6449401491 (this page in markdown: same URL + `.md`) - Developer: [Ryouhei Azuma](https://appshunter.io/developer/1353297781) - Category: Utilities, Sports - Price: Free - Rating: 4.70/5 from 49 App Store ratings · 6 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 15 MB - Languages: American English - Released: 2023-05-22 - Data updated: 2026-08-25 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/referee-yellow-card-whistle/id6449401491/reviews.md ## What is 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. ## Key features - Whistle sound functionality - Full-screen yellow, red, orange, and green cards - Simple and easy-to-use interface - Suitable for sports refereeing - Useful for training and games - Can be used for pranks ## Recent user reviews (6 of 6) All indexed reviews: https://appshunter.io/ios/app/referee-yellow-card-whistle/id6449401491/reviews.md ### 1/5 — Too many ads *2026-07-08* Want to quickly show a yellow card? Nope. You’ve just embarrassed yourself because you’re holding an ad… There are way too many to make any practical use out of this app. **Developer response:** We’re sorry for the inconvenience. As this is a free app, it includes ads to support its development. We understand that ads can be especially disruptive when you need to show a card quickly, and we appreciate your feedback. ### 1/5 — ㅋㅋ이거다운받는데 광고는 ㅇ *2026-07-08* 장난하나 **Developer response:** 불편을 드려 죄송합니다. 무료 앱 운영을 위해 광고가 포함되어 있지만, 너무 방해되지 않도록 광고 노출 방식과 빈도를 계속 개선하겠습니다. 의견 남겨주셔서 감사합니다. ### 5/5 — Good *2025-06-13* I love this **Developer response:** Thank you so much! We’re very happy to hear that you love the app! ### 5/5 — wow *2024-12-14* very good if tour playing with da boys some fun games **Developer response:** Thank you for your review! We’re glad the app helps make games with friends more fun! ### 5/5 — Amazing *2024-06-08* Great work playing football in the garden giving red yellow orange and green out **Developer response:** Thank you for using our service! ### 5/5 — Fun *2023-12-17* Very fun but u can't use whistle **Developer response:** Thank you for using it! For the whistle, press the button above the color of the card. Or check that it is not in silent mode. ## Frequently asked questions about Referee Yellow card, Whistle ### What is Referee Yellow card, Whistle used for? Referee Yellow card, Whistle is a simple referee application for sports, training, games, or even pranks. It provides a whistle sound and full-screen colored cards for making judgment calls. ### What types of cards can Referee Yellow card, Whistle display? Referee Yellow card, Whistle can display four kinds of cards in full screen: yellow card, red card, orange card, and green card. ### Is Referee Yellow card, Whistle free to use? Yes, Referee Yellow card, Whistle is free to download and use. However, it does contain advertisements. ### Does Referee Yellow card, Whistle have ads? Yes, Referee Yellow card, Whistle contains advertisements as part of its free model. ### What devices is Referee Yellow card, Whistle available on? Referee Yellow card, Whistle is supported on iPhone, iPad, and iPod devices. ### How often is Referee Yellow card, Whistle updated? The latest version of Referee Yellow card, Whistle is 2.1, and it was last updated on April 6, 2026. This indicates a recent update. ### What is the age rating for Referee Yellow card, Whistle? Referee Yellow card, Whistle has an age rating of 4+, making it suitable for a wide range of users. ### How does Referee Yellow card, Whistle compare to physical referee tools? Referee Yellow card, Whistle offers a digital and convenient alternative to physical referee tools. It combines a whistle and multiple card types in one application, accessible on your mobile device. ## Version history (last 5 releases) ### 2.4 — 2026-07-29 Added cards you can set to any color you like. ### 2.3 — 2026-07-16 Minor fixes. ### 2.2 — 2026-04-16 Minor fixes have been made. ### 2.1 — 2026-04-06 Minor fixes have been made. ### 2.0 — 2025-09-18 Now supports iOS 26 ## Apps similar to Referee Yellow card, Whistle | App | Rating | Price | Category | | --- | --- | --- | --- | | [Dog Whistler – Whistle Sounds](https://appshunter.io/ios/app/dog-whistler-whistle-sounds/id1229499618) | — | Free | Utilities | | [Revolver Simulator '](https://appshunter.io/ios/app/revolver-simulator/id6474555941) | 3.9 (210) | Free | Utilities | | [Real Gun](https://appshunter.io/ios/app/real-gun/id6478287771) | 4.7 (856) | Free | Utilities | | [Real Madrid Keyboard](https://appshunter.io/ios/app/real-madrid-keyboard/id1572650923) | 4.7 (1,648) | Free | Utilities | | [Coin Simulator - Coin Flip App](https://appshunter.io/ios/app/coin-simulator-coin-flip-app/id1458466999) | 4.8 (323) | Free | Utilities | | [Number generator random, dice](https://appshunter.io/ios/app/number-generator-random-dice/id1130671183) | 4.5 (37) | Free | Utilities | ## More apps by Ryouhei Azuma - [WhiteRoom - Escape](https://appshunter.io/ios/app/whiteroom-escape/id1546492128) - [Flash Mental Math - Simple](https://appshunter.io/ios/app/flash-mental-math-simple/id1547944841) - [Simple Drawing Pad](https://appshunter.io/ios/app/simple-drawing-pad/id1599866010) - [Whiteboard - Simple](https://appshunter.io/ios/app/whiteboard-simple/id1599938892) - [Blackboard - Simple](https://appshunter.io/ios/app/blackboard-simple/id1600026235) - [Drawing Pad - Blackboard style](https://appshunter.io/ios/app/drawing-pad-blackboard-style/id1600254502) All apps by Ryouhei Azuma: https://appshunter.io/developer/1353297781 ## Related topics [referee cards](https://appshunter.io/ios/topics/referee-cards) · [red card yellow card](https://appshunter.io/ios/topics/red-card-yellow-card) · [referee whistle](https://appshunter.io/ios/topics/referee-whistle) · [quiz arbitro](https://appshunter.io/ios/topics/quiz-arbitro) · [referee app](https://appshunter.io/ios/topics/referee-app) · [yellow card](https://appshunter.io/ios/topics/yellow-card) · [referee tools](https://appshunter.io/ios/topics/referee-tools) · [arbitro](https://appshunter.io/ios/topics/arbitro) · [soccer referee](https://appshunter.io/ios/topics/soccer-referee) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*