This is simple day to day calculator. consists of following type of calculatorsnn1. Discount Calculatorn2. Percentage Calculatorn3. Percentage Changed Calculator n4. Compound Interest Calculatorn5. Mortgage Calculatorn6. Tip & Split Calculatorn7. Profit / Loss Calculator nnTo keep app free I need to implement ADs in the notification and as an icon that can be freely removed.