Sample and library code bases are open source and licensed under the Apache License, Version 2.0. (http://www.apache.org/licenses/LICENSE-2.0)
If you are an Android developer, you can contribute. All bugs, feature requests, feedback, etc. are appreciated. Please, feel free to create an issue (https://github.com/RamiJ3mli/PercentageChartView/issues).
Pull requests are welcomed on dev branch (commits by feature if possible).
If you are not an Android developer, this app is useless for you.