Quirk is a free puzzle app for iPhone and Android with 120+ types: logic, word, number and memory. Sudoku and Nonogram are there, and so are Bridges, Star Battle, Kakuro and many you may not have met. Every board can be solved by reasoning. Each type opens with a short introduction, and a hint explains the next step. No account, no mandatory timer, offline, 40 languages. Ads between puzzles; Ad-free is a one-time EUR 7.99.
