great S pen app

[dpeagle]

i saw this today on android police. very handy calculator. does %, fractions, and now even scientific functions. and best of all, its free. (The Amazing MyScript Handwriting Calculator Gets A Major Update, Does More Maths (And Portrait Mode))

 

[Benjie]

Works on the 10.1 Note also.

 

[BufordTJustice]

the stock Snote has a formula function built in. just write any equation you can think of and it will math it.