Handbook of Rocks is a free android application with the complete list of all rock types. Nearly all rocks can be classified according to their origin into three major groups. These divisions include igneous rocks, sedimentary rocks, and metamorphic rocks. A few rocks are hybrid in nature.
Andrei Ionut Apopei has developed the app that lies within the Educational category. Over 10K users downloaded and installed Geology Rocks and its latest update was on Sep 24, 2020. Users rated the tool 4.5 on Google Play.
There are in-app purchases and advertisements in this application. Get the setup package of Geology Rocks 2020.9.1 that is provided for free and have a look at users' reviews on Droid Informer. The app is developed for Android 4.1 and higher. The app is completely secure to download.