This application is totally secure for downloading. HRTuning.com is the developer of the app that can be found in the Tools category. Users rated CR Calculator 4.1 on Google Play.
The developer rolled out a new version of the app on Jan 27, 2018 and over 50K users downloaded and set up this application. Ads are a part of CR Calculator. Samsung and Acer users recommend this application.
Download the setup package of CR Calculator 2.2 that is available for free and have a look at users' reviews on Droid Informer. The app is designed for Android 4.0 and above.