Quickplot is Cool scientific calculator for students and engineering professionals.
Choose from the built in functions or enter any expression and it will be evaluated.
If the expression contains 'x' it will also be plotted.
A file manager with an advanced interface, that resembles a bookcase.
You can view edit manage move mail rename reorganize your files and folders using filemanger.
Noteable let's you take picture notes, text notes, voice record notes.
You can edit, delete, search and send them in an email.