PocketCAS lite for Mathematics

This useful math program is styled like working on a sheet of paper. The key advantage is that, unlike working in a calculator app, when you're done you can have something printable that makes sense. If you use it more than a little the app can benefit from a keyboard. It reminds me of MathCAD by MathSoft from the 90's (sold to PTC, 32 bit Windows only.) The free version of this app doesn't do some of the more complex things that a working engineer or engineering student might need, but for anyone else its complete and there really is enough to work with to decide if its enough,

I am an engineer! But I am now celebrating my 90th birthday. Big deal! I am still enthralled with the fact that I can still figure things out. And numbers matter, so with your help, the things that I design still fit together and work. Muchos Gracias, Joe Baumoel

Nice