This version is a partial rewrite that fixes many issues, make it easier and more usable. One notable new feature is to load up predefined equations, there are several predefined in this update.
Scientific calculator that offers advanced scientific and some statistical functions and allows you to define variables and functions (including Algebraic Recurrence using ?: syntax).
Optimizes for portable use on a phone screen; but tablet should fine it just as good; QVGA screens depends on orientation, Motorola Spice sports portrait and runs great, but Motorola Charm uses a landscape model and interface would squish together, alternative input method is programmed in and Charm users can work around the squishy main screen.
If you made a mistake in defining your own recurrence function, a general stack error may result, in such case it is referring to an isolated subroutine and you simply need to correct your own mistake and you can try again.
Compiled against 1.6, might be possible to run in lower versions. Higher Android version have no problem at all but interface would likely differ slightly.