@PriceCalc

Calculate the unit price from the content, quantity, and price. You can save up to 4 sets, so you can save comparisons between the main unit and refills, different capacities, single units and sets, etc. On the iPad, you can open multiple windows and copy between windows by dragging and dropping.

iCloud allows you to sync data between multiple devices such as iPhone and iPad.

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2. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/