Calcable - The spreadsheet calculator app for iPhone and iPad

Each part of your calculation is shown. Not only can you see exactly what you typed, but you can go back and change it.

What others are saying:

- "Incredibly simple, incredibly perfect! - This is the best calculator app ive ever tried!"

- "Great calculator - Love the mix if spreadsheet and calculator - great idea"

- "Awesome calc replacement - Man, this thing is really handy and well done. Its not just a paper tape, the whole thing live-updates while you edit it. Very slick work."

which allows you to change parts of your calculation. Its like a spreadsheet with a running total!