HWCalc - Free
iOS Universal Utilities
This application is a calculator of a hand-written style.
Calculator to compute in the order you entered.ex) 1+1x2=4.
The answer is always displayed with the input value.
Can be switched between hexadecimal and decimal display.
[BS] button can delete one character.
In hexadecimal mode, the bit inversion and bit shift is possible.
Supports up to 32bit arithmetic.