This app is a fully working emulator of citizen calculator model CT-555N/ CT-555W. The check and correct feature is useful for verifying long calculations without reentering the values and is ideal for general and business purposes.

Features
- Basic math operations (addition, subtraction, multiplication, division)
- Check and correct
- Auto replay
- Percent calculation
- Tax calculation
- Memory calculation
- Price mark-up & mark-down calculation
- Constants calculation
- Number formatting (Decimal and digit-grouping) as per device locale
- Grand total (GT)