Innovative but not efficient

200% more efficient? I highly doubt it. Its a very basic calculator, which is totally fine. But the fact that some functions are gesture-based and some are NOT makes your brain constantly switch between gestures and taps, thus making it 200% less efficient. Getting-used-to is extra work. Alas, extra work is not efficiency.

Issues:

CLEAR gesture should be able to be performed with one finger. 99% of people operate their phones with one hand. So please, come up with a different gesture.

Percentage function: 10+50%=15, NOT 60. Fix it.

iAlan.com about Rechner Calculator