Per helps you shop smarter by figuring out what gets you more for your money. At its heart, Per is a price-per-unit calculator, but it brings a few neat little tricks to the comparison-shopping party, though, like built-in unit conversion and calculators.
It's been a REALLY long time since the last update of Per —seven (!) years, in fact— so the entire app has been rewritten to be faster and more stable, with a cleaner user interface.
Thought Detox