Although Calzy can handle advanced functions, this gorgeous calculator shines even when doing basic arithmetic.

What we love: All the features you can access via Haptic Touch. Toggle between light and dark modes, bring up a tax calculator and currency rounding, bookmark complicated calculations, and more.

Quick tip: Want to save a value to use later? Use Haptic Touch to drag it to the Memory Area at the top of the screen. To see your previous calculations, go to the app’s History tab.

Meet the creator: A self-taught indie developer and designer, Raja Vijayaraman first created Calzy for his own use. (He needed to save calculations and show full mathematical expressions.) His other apps include Lumy and Currenzy.