Logiqura - Sudoku, 2048 and a logic puzzle, in one app.
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Three classic brain games, together in one app: Sudoku, 2048, and Grid Gloom, a light up logic puzzle.
What ties them together is one progression system. Every game you finish feeds the same daily streak, weekly challenges, achievements and Game Center leaderboards, so three separate games become one daily habit.
Sudoku has five difficulties, smart notes, mistake tracking and undo. Free to play, with a one time unlock to remove ads and optional hint packs. iPhone and iPad.

Replies
The unified streak across three different puzzles is such a clever hook, makes it way easier to actually build a habit. Sudoku notes and undo are nicely smooth.