PenaltyFlip: Red Card Yellow Card Green Card is a free lifestyle application available on Android 9.0. Developed by Appliberated, this app is a perfect substitute for penalty cards in various sports, including association football, athletics, badminton, bandy, fencing, handball, polo, rugby, volleyball, and many others. It can also be used in daily life, such as in a bar or when making personal decisions.

The app offers several penalty card options, including red, yellow, blue, green, white, and black. It also includes a shuffle icon that randomly selects a penalty card, making it easier for users who can't decide which one to choose. Additionally, it has a menu option that turns the full brightness of the screen when showing the penalty card. PenaltyFlip is only 0.07 MB, and it does not contain any ads, require an internet connection, or ask for any permissions. Lastly, the app is 100% open source, and the developers welcome contributions through their Github page.