1. enter bill amount with slider and stepper or decimalpad
2. choose total to pay with slider and stepper
3. read tip in percentage
4. InApp purchases
5. consider tax
6. discount calculator
1. enter bill amount with slider and stepper or decimalpad
2. choose total to pay with slider and stepper
3. read tip in percentage
4. InApp purchases
5. consider tax
6. discount calculator