app source code4 swiftui2 admob integrated1 android app1 android studio1 android template1 battery app1 battery level1 battery monitor1 charging app1 charging dashboard1 complex ui1 customizable app1 dark ui1 data synchronization1 educational app1 educational game1 entrepreneurship1 firebase1 flutter app1 flutter app source code1 flutter earning app1 flutter game1 flutter quiz app1 game app flutter1 game app source code1 gaming app1 ios app1 ios template1 ios utility1