Redmine Report

Redmine Report is a free and open source Redmine app for Android that boasts advanced features such as issue editing, project analytics, and ability to add new notes. If you're a Redmine user and looking for an Android app to access Redmine through your mobile device then, Redmine Report is a perfect choice.
[Features]
- Easily access Redmine on any Android device
- View, Edit and Update Issues
- Create new Notes in any Issue
- View different Analytics and graphs of Redmine Projects
- Auto-syncing with Redmine server updates
- Optimized for both mobiles and tablets

[Requirements]
- REST API must be enabled in Redmine (via 'Administration -> Settings -> Authentication' in your Redmine app).
- Redmine version 2.1+

[What is Redmine?]Redmine is an open source flexible project management web application powered by Ruby on Rails framework. Redmine is cross-platform, cross-database and released under the terms of the GNU General Public License v2 (GPL).

[Main Features of Redmine]

●Multiple projects support●Flexible role based access control system●Flexible issue tracking system●Gantt chart and calendar●News, documents & files management●Feeds & email notifications●Per project wiki●Per project forums●Time tracking●Custom fields for issues, time-entries, projects and users●SCM integration (SVN, CVS, Git, GitHub, Mercurial, Bazaar and Darcs)●Issue creation via email●Multiple LDAP authentication support●User self-registration support●Multilanguage support●Multiple databases support

You can get more info about Redmine at: http://www.redmine.org/