React Native simpel app

I need a simpel react native app for mobile devices for a school project. The topic of the app ist not given so be free. In it should be 24h of work but not to complex a simpel but not small app. You don't neet to make a new one you can give me an existing app you made by yourself but please delete all comments who relate to yourself not to the app. I need it in the next 24 hours