An Android app shows statistical data by bar charts. The data is managed by the RoR server via JSON API. This project requires to draw bar charts, we prefer those who have experience on Android chart libraries.
---- The client side must work on Android 2.3.3 (API level 10) or later
--- The server must work on Ruby 2.0.0 and Rails 3.2.x
---- 3rd party libraries may be used to draw bar charts