Calculatius is just a handy calculator with some uncommon features. You can change functions of some buttons. For this you have to hold your finger on that one which has a border. After approximately a second of the holding, you get a window where you will choose a needed math function.
YouOn designed Calculator Plus Calculatius that falls into the Productivity category. Over 1K users downloaded and set up the tool and its most recent release was on Dec 26, 2017. Users rated this application 4.2 on Google Play.
It's free of charge to get the installer of Calculator Plus Calculatius, also, you can take a look at users' reviews on Droid Informer. The app runs on Android 4.4 and higher. The download of the app doesn't contain viruses or any kind of malware.