26 July 2013Calca, iTunes Store:
Calca is a powerful symbolic calculator that gives you instant answers as you type. It solves equations and simplifies complex expressions – it’s a computer algebra system in your pocket! It’s also a rich Markdown text editor so that you can explain your ideas alongside your calculations.
This app is awesome and future evolutions of this concept will supersede LaTeX. I’ll just go download it on my Nexus 7 right now.