Features
* Browse Scid (Shane's Chess Information Database) files, optimized for databases with millions of games
* Header search using player names, sites, events, dates, results, ECO, ELO ratings,…
* Search games by material and position
* Favorites
* Copy/paste games and positions to/from clipboard
* Edit board
* Support for variations
* Replay the game with a configurable delay between moves (autoplay)
* PGN import (also includes import from Internet)
* Analysis with included chess engine: Stockfish 10; you can add additional UCI engines for analysis
* Study mode
* Experimental write support and marking of games for deletion (needs Scid for PC to compact database after marking games for deletion)
* Retrieve positions from external programs, such as https://play.google.com/store/apps/details?id=com.kgroth.chessocr (ChessOcr, non-free)

License
* GNU GPL v2
* Source: https://github.com/gkalab/scidonthego

Developers
* Most of the GUI code was taken from Peter Österlunds DroidFish and re-released under GPL v2 by the authors permission.
* Scid integration by Gerhard Kalab.
* Various enhancements by Alexander Klimov.
* Manage UCI engines by Larry Isaacs.

Permissions
* Storage for accessing databases stored on the SD card
* Internet access for downloading PGN files from The Week in Chess (http://www.theweekinchess.com/twic/)