Hi Product Hunt! 🐸 I’m sharing Frogoku, a small watercolor puzzle game built around a quiet moment of deduction. If you enjoy Sudoku or Star Battle-style puzzles, the rules should feel familiar: one frog per row, column and colored pond, and frogs cannot touch—even diagonally. There are 300 mainline puzzles across ten chapters, from 4×4 to 9×9. Every puzzle has been machine-verified for a unique solution and a complete logical path. You can experiment and undo freely; placement feedback checks visible rule conflicts. My favorite part is A City a Day: a shared daily puzzle with one of 30 rotating watercolor destinations and a short note from your frog. Finish it to share a travel postcard without revealing the answer. The puzzles work offline. All mainline and daily puzzles are free to play, with ads and three free hints per level. Peaceful Pond is an optional subscription for no ads and unlimited hints. Available now for iPhone and iPad on iOS/iPadOS 17+. I’d love your feedback on the first few puzzles, the touch controls, and whether the daily city makes you want to return. Which city would you like the frog to visit next?

Frogoku

Cozy frog logic puzzles with a watercolor city each day

Cozy frog logic puzzles with a watercolor city each day