Awesome
Chart and Graph Library for Android
GraphView - open source graph plotting library for Android
GraphView is a library for Android to programmatically create flexible and nice-looking diagrams. It is easy to understand, to integrate and to customize.
Create Line Graphs, Bar Graphs, Point Graphs or implement your own custom types.
<img style="height:200px" src="http://www.android-graphview.org/file/2016/10/12/Screenshot_20161012_180242_2.png" /> <img style="height:200px" src="http://www.android-graphview.org/file/2016/10/12/Screenshot_20161008_122642_1_2.png" />Try the Demo app at Play Store
[https://play.google.com/store/apps/details?id=com.jjoe64.graphview_demos]