ThinkGrid: Calm Logic Puzzles

ThinkGrid is a calm collection of logic puzzles for people who want to think, not be sold to.

Ten hand-crafted puzzle types in one quiet app. No ads. Ever. No coins, no timers counting down, no popups asking you to buy something at the exact moment you got stuck.
Just puzzles, and the slow pleasure of working one out.

✦ TEN LOGIC PUZZLES, ONE APP — AND GROWING
• Suguru (Tectonic)
• Star Battle (Queens, Two Not Touch)
• Masyu
• Nonogram (Picross)
• Hashi (Bridges)
• Light Up (Akari)
• Kakuro
• Fillomino
• Tents
• Bomb Digger

More puzzle types added over time.

✦ DAILY PUZZLES
A fresh daily for every game type, every day. Build a streak. Or don't — nothing punishes you if you skip a day.

✦ BUILT FOR CALM
• No advertising of any kind
• No coins, no revives, no "watch a video to continue"
• Soft, readable typography
• Light and dark themes, with a system-follow option
• Designed for short breaks or longer focus sessions

✦ DESIGNED FOR EVERYONE
• Large tap targets and high-contrast text
• Free hints whenever you want one
• Undo and redo, as many times as you like
• Mistakes underline themselves — no fail states, no penalty
• Works fully offline

✦ THINKGRID PLUS (optional subscription)
The free tier is complete — all ten puzzle types, daily puzzles, Normal and Hard difficulty, light and dark themes, and unlimited hints, forever.

ThinkGrid Plus unlocks additional features for players who want more:
• Master and Grandmaster difficulty levels
• Full daily puzzle archive (replay any past daily)
• Four extra color themes
• Cross-device progress sync
• Detailed solving insights and statistics

Available as a yearly subscription or a one-time lifetime purchase. No free features are ever moved behind the paywall.

Perfect for fans of Sudoku, Nonograms, Picross, Logic Grid Puzzles, Brain Training, Daily Challenges, and quiet thinking.

Made by two people in the Netherlands. Built to last, not to extract.

Recent changes:
Bug fixes and performance improvements.