Simple Calculator Multi vs Level Zero

This is a simple calculator that comes in handy when you want to do some quick calculations. It does not display ads and does not use unnecessary permissions. It supports multiple screens, so you can perform multiple calculations at the same time. You can change the look and feel with themes and customize it yourself. How to operate - Clear Button long press ... All clear - Backspace Button long press... Clear. - Screen long press - Copy or Paste - History long press... Copy or delete history. - Custom Theme long press... Delete or Rename.

Level Zero emulates a classic bubble level tool and measures angles in portrait mode, in landscape mode, or two angles at the same time when flat on a surface. If desired it's also possible to manually switch between the modes. This app has no ads, and no purchases required to unlock any features, and it never will. There is one purchase available in the app which can be used to support the development of this app, but it is entirely optional.