You can blow a whistle.Red Card and Yellow Card can be displayed full screen.Use this for refereeing sports matches such as soccer, futsal, rugby, handball, ice hockey, and volleyball.The whistle will be heard for as long as you press the screen.
https://andro.io/app/whistleandcards
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Whistle, Yellow & Red Card for Android – Latest Version & Features
by hosinoatusi
★★★★★
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> 2.2k
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~$900
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