Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized. Your data is your data alone and you deserve to choose where it is stored, if it is shared with some third party and how it's transmitted over the Internet.

Website: syncthing.net/

Source code: github.com/syncthing/syncthing-android

Forum: forum.syncthing.net/

Issues: github.com/syncthing/syncthing-android/issues
From version Syncthing 1.1.2.1:
* Update syncthing to v1.1.2
All versions
May 7, 2019
April 2, 2019
March 17, 2019
February 15, 2019
November 20, 2018
October 3, 2018
July 27, 2018