This is a calculator that you write on. Very clever and very easy to use and it’s free!
- Works on your smartphone (Android- iOS)
- Works on your tablet (Android- iOS)
- Use your handwriting to write any arithmetic formula.
- Write and calculate mathematical expressions in an intuitive and natural way with no keyboard
- Supported mathematical symbols:
- +, -, x, ÷, +/-, 1/x, ()
- %, √, x!, |x|
- ℯx, xy , x2
- cos, sin, tan
- acos, asin, atan
- ln , log
- π, ℯ,
- Scratch-out gestures to easily delete symbols and numbers
Take a closer look here http://www.visionobjects.com/en/webstore/myscript-calculator/description/