Create your own family tree Family Gem is an app for Android designed to manage family trees. It's completely free and open source.
With Family Gem you can: Create a family tree from scratch, entering names, dates, places, various events, photos and sources. Import an existing family tree through a GEDCOM file and modify it as you want. Export the family tree you created (via GEDCOM again) to import in every other genealogy program. Share a tree with your relatives, letting them improve it and receiving back the updates. Then you can choose whether accept them or not.