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Download the app DIRECTLY from the Play Store: 

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App is now in production (as beta). Go here https://play.google.com/apps/testing/com.technicosa.multicalculator and leave the test. Install the app from the Play store the normal way.

New update: Version 0.1.1
-> New buttons layout
-> Bigger backspace buttons
-> Cursor now visible in Jelly Bean devices
-> Fixed factorial, permutation and combination errors in Scientific mode
-> Fixed crash while changing mode in Programmers mode
-> Added Settings: choose a mode to open on launch; choose to restore previous state

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Programmer mode: App crashes if base is changed without an input. Have fixed that. Until I release an update, change base after entering some input. 
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