The4signs is a free trivia game developed by Younes.Info for Android devices. This game is perfect for those who love to play games that are both fun and instructive. The game consists of 100 levels, each level containing four white fields where the player must put one of the signs (+,-,*,/) to get the number written in the last field. The player must then click 'Test' to see if their guess is right or wrong, and 'Find' to get one of the correct results.

One of the best features of The4signs is that players can propose their own operation to the game. This makes the game more challenging and engaging. The game is easy to use and is suitable for people of all ages. Aside from the game, the app also has an 'About Us' section where players can learn more about the developer.

Overall, The4signs is a great trivia game that is not only fun, but also educational. It is perfect for people who want to challenge their minds and learn new things at the same time.