Cole has bullet pointed the changes in 3.1:
- Added a fast rewind button to go back to the beginning of the game (fast fastforward is done by tapping anywhere on the board).
- Now shows move numbers when reviewing move history.
- Updated head-to-head to include wins/draws/losses record of your opponent.
- Added option to flip the black and white pieces upside down in the handoff mode when it is black's turn.
- Added an automatic list of previously played opponents to the create new username game view.
- Fixed so that head to head view lists stalemate games correctly.
Chess by Post is avaiable in both a regular paid for version, and an ad-supported free version.