Great scientific calculator function
Good interface, supports tablet only, would be nice to support phone version
1. Display '0' at start-up time.
2. Add an operator key name display at the top right corner.
3. Add an option to show functional operator or not.
4. Automatic scale screen display to fit any resolutions.
(Unofficial) Taiwan market, calculated offline using USANA products in Taiwan market prices, automatic order price and the number of points