A puzzle feels impossible
Every puzzle has exactly one solution. Tap Hint for the next step, or Reset to start the board again. Pre-placed pebbles are part of the puzzle and can’t be moved.
Exactly One · Support
Help with the game.
Questions, bugs or feedback: email us and a person will reply.
No connection?
The whole game works offline, including the daily puzzle. Only the optional Game Center leaderboard and achievements need a connection.
Sound, haptics and progress
Open Settings in the game to turn sound or haptics off, or to reset your progress. Resetting cannot be undone and does not remove Game Center achievements.
Reporting a problem
Tell us what happened, where in the game it happened, and the app version and build from Settings → About. Please don’t send passwords or payment details.
Purchases
Exactly One has no ads and no in-app purchases, so there is nothing to buy or restore.