small help for daily life 2.0

As for this application which is to be convenient for a salesman going out, following 4 functions are in one application.
A little bit useful 5 tools.
1 Easy memo function
2 Drawing program with a text field attached,so the keyboard can be used
3 When it accumulates in the storage device,send it to your home computer by mail.
4 Internet function inside the same application (It can operate from both URL and buttons). With web back button which can go backward
5 Calculator that can temporarily write formulas for calculation by handwriting on the spot