IOS – What’s the name of the iOS / OS X calculator app that has ‘variables’ functionality

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I'm looking for an app on the App Store but I forgot its name.

It is a calculator app that looks like it has been written on a noteblock.

You can store the solutions of calculations as quasi-variables and then reuse them later on.

I know it's available for the Mac and all iOS devices.

Does anyone know what app this is?

Best Answer

This sounds like the app Soulver which is available on Mac OS X and iOS. It allows you to use a mixture of natural language and spreadsheet/calculator functions to perform easily readable equations.

Soulver