Say hello to Evi

Evi is our best selling mobile app that can answer questions about books, music, films, conversions, history, people, places and much more.

To experience the full power of Evi you can download her app for free on iOS, Android and Kindle Fire.

You asked:

is repo a derivative

No. Repo is not a derivative instrument.

Repo, the tool that Google built on top of Git to manage the many Git repositories, do the uploads to revision control system, and automate parts of the Android development workflow