Raku Sudoku

Raku Sudoku is now a native iPad app. The board was rebuilt for the larger canvas — it keeps a fixed proportion and stays centred instead of stretching, the keypad sits beside the grid in landscape so your hand never covers the puzzle, and the layout adapts continuously to any window size rather than jumping between a few fixed states. Everything else is unchanged. Still 16 MB. Still no ads, no subscriptions, no pay-to-win. One purchase unlocks all six difficulty levels, forever.

Source: Apple App Store listing.