Pairbound

What you get

• Dominosa, the classic logic puzzle: a grid of numbers hides a full set of dominoes. Pair up neighbouring numbers so every domino is used exactly once.
• Unlimited puzzles, generated on your device — every one checked to have exactly one solution, so you never need to guess.
• A Daily Puzzle that is the same for everyone, with the last four weeks to catch up on.
• A 60-level Journey from gentle first steps to Master boards.
• Hints that explain the logic rather than just giving the answer.
• A domino tray that crosses off what you have found — tap a domino to see everywhere it could still go.
• Undo and redo for everything, six themes including High Contrast, in 50 languages.

Quietly respectful

Fully offline. No accounts, no sign-ups, no analytics and no leaderboards. Your progress and settings stay on your phone — we run no servers and collect nothing ourselves.

Every difficulty, Journey level, theme and archive puzzle is free. No banners, no ads between puzzles, no subscriptions. Three hints per puzzle are included; you can watch an optional short video for more, or make one inexpensive purchase for unlimited hints without ads. Ads are never personalised.

Contact

Questions, feedback, or support: support@ostapenko.studio

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