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App Store Apps > Utilities > Referee Yellow card, Whistle
Referee Yellow card, Whistle icon

Referee Yellow card, Whistle

by Ryouhei Azuma · Utilities · Free
On the App Store since May 2023 · Data updated 2026-10-29

Referee Yellow card, Whistle is made and published by Ryouhei Azuma. AppBrain is an independent app data site and isn't affiliated with Ryouhei Azuma. The app name, icon, screenshots and description belong to Ryouhei Azuma and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
4.65
51 ratings
Last updated
July 29, 2026

It doesn't have enough ratings yet to judge what users think.

Official page on the App Store

Rankings

App Store top charts

App Store Rankings for Referee Yellow card, Whistle

This app is not ranked

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Releases

Updates seen on the App Store
Version
2.4
Launched
May 2023

No changelog data

User feedback

Ratings and reviews on the App Store

Comments on Referee Yellow card, Whistle for iOS

We don't have enough comments to show example comments. Please check back later.

Technology

Found in the app by AppBrain
Price
Free
App size
14.9 MB
Content rating
Everyone

Technologies used by Referee Yellow card, Whistle

About the app and developer

About Referee Yellow card, Whistle

Referee Yellow card, Whistle is an utilities app developed by Ryouhei Azuma.

User Ratings

Referee Yellow card, Whistle is rated 4.65 out of 5 stars. The rating is based on 51 ratings.

App Information

Referee Yellow card, Whistle is freely available from the App Store. The app size is 14.85 MB. The latest version available is 2.4. The last update was on July 29, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since May 2023.

Developer information for Ryouhei Azuma

Ryouhei Azuma

Address:

Frequently asked questions about Referee Yellow card, Whistle

Is Referee Yellow card, Whistle free?

Yes. Referee Yellow card, Whistle is free on the App Store.

Is Referee Yellow card, Whistle still available?

Yes. Referee Yellow card, Whistle is on the App Store, and the last update we saw was on July 29, 2026.

How large is Referee Yellow card, Whistle?

Referee Yellow card, Whistle is 14.85 MB.

Is Referee Yellow card, Whistle suitable for children?

App Store rates the content of Referee Yellow card, Whistle as suitable for everyone.

How do people rate Referee Yellow card, Whistle?

Referee Yellow card, Whistle scores 4.65 out of 5 stars, from 51 ratings on the App Store.

Who made Referee Yellow card, Whistle?

Referee Yellow card, Whistle was developed by Ryouhei Azuma. It is listed in the utilities category on the App Store.

What are the best alternatives to Referee Yellow card, Whistle?

People looking at Referee Yellow card, Whistle also look at these utilities apps: EvaCalòr - PuntoFuoco, MokoLora, DS Charge, microBees, Sensolus.

Share Referee Yellow card, Whistle

Store listing

By Ryouhei Azuma, from the App Store
Referee Yellow card, Whistle Screenshot 1 of 3
Referee Yellow card, Whistle Screenshot 2 of 3
Referee Yellow card, Whistle Screenshot 3 of 3
Screenshots by Ryouhei Azuma, from the the App Store listing
Description by Ryouhei Azuma Written by the developer, not by AppBrain. Click to read.
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.
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