This simple Tip Calculator Application built on Android Studio (Dolphin version) - Kotlin
It has full functionality of calculating tip by percentage
As tip amount changes from 0 to 30, it has animation of color (red to green) and text change (poor to Amazing)
Android View:
When app is started:
When tip % is 0 ~ 9 which is poor:
When tip % is 10 ~ 14 which is Acceptable:
When tip % is 15 ~ 19 which is Good:
When tip % is 20 ~ 24 which is Great:
When tip % is 25 ~ 30 which is Amazing: