Built for one hand
- Everything within thumb's reach Hold a number to lock it, then tap the board to place a run of the same digit. Double tap a cell and nine numbers fan out beside your thumb.
- Selection follows your finger Drag across the board and the selection comes along. No need to hit each cell exactly.
- Six levels Novice through Master. Each level tunes both how many givens remain and which solving techniques you'll need, so every step up feels different.
- A daily puzzle that fits you The level is set from your own record, with a weekly rhythm on top — lighter on Monday, heavier at the weekend.
- Notes without the fiddling Turn on notes and sweep across cells to mark candidates as you go. Stuck? Fill in the candidates for a single cell.
- Ads only when you ask Nothing interrupts a game. Hints and note checks are free once per game; watch an ad only if you want more.