Add that feature that instead of touching the screen to stop the timer, you bump the cube on table and the timer stops like in IOS timers

And I will alpha or beta test for you, add me to the list

And also instead of putting L and R buttons, just keep 1 button because some devices dont support multi-touch so that wont be able to start the timer.

Good Job, will be the best android timer after its release and also try adding all the features from this timer as it is a popular timer for android

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https://play.google.com/store/apps/details?id=com.understorm.chronopuzzlefree
Thank You for your Hard Work