Stone Calculator Free app for iPhone and iPad

Stone Calculator Free is a great free calculator with beautiful HD graphics!

Features:
- General calculations: adding, substracting, multiplying, dividing, square-rooting
- Standard memory functions: Memory Addition, Memory Substraction, Memory Recall, Memory Clear
- Thousands separators option
- Can handle very large numbers - up to 60 digits! (never displays in scientific notation)
- Large, easy to press buttons
- Universal app - supports both iPhone and iPad devices
- Portrait and landscape orientations on iPad devices
- Copy/Paste buttons
- Key click