Waste of time
Terrible, doesn't work, don't waste your time!
What happened?!
A revision or two ago this app stopped working on our iPad 1. One can enter data but no calculations take place (and no re-calc button appears to force same). The <return> key does not cause any re-calculation either. Not sure what happened but if not cured in a version or two it will deleted. Too bad. It was a 5-star IMHO.
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