Logic Arcade vs ThinkGrid

Eight classic math and logic puzzles in one app. No ads. No accounts. Just puzzles. GAMES INCLUDED: - Water Jugs — Measure a target volume by filling, emptying, and pouring between jugs. Based on Bezout's identity and the Extended Euclidean Algorithm. - Tower of Hanoi — Move stacked disks between rods without placing a larger disk on a smaller one. Includes the classic 3-rod puzzle and the 4-peg Frame-Stewart variant with a custom sandbox mode. - Sliding Puzzle — Arrange numbered tiles in order on grids from 3x3 to 6x6. The original 15-puzzle, popularized in the 1880s. - Lights Out — Toggle lights on a grid where each press flips neighboring lights. Rooted in linear algebra over GF(2). - Knight's Tour — Guide a chess knight to visit every square exactly once. Studied by Euler, solved by Warnsdorff's heuristic. - Egyptian Fractions — Decompose fractions into sums of distinct unit fractions. Features authentic hieroglyphic numeral display. - Turntables — Rotate interlocking rings to arrange colored tokens. A physical model of permutation groups and Hungarian Rings. - River Crossing — Ferry the wolf, the goat and the cabbage (and later wolves, sheep, oxen and a sheepdog) across the river without anyone getting eaten. Alcuin's 1,200-year-old puzzle and the missionaries-and-cannibals problem. FEATURES: - Up to 40+ hand-crafted campaign levels per game - Chapter-based progression with increasing difficulty - Auto-save and resume — pick up right where you left off - "The Math" — brief explainers on the theorem behind each game - Personal best tracking for moves and time - Free Play / Random mode for 5 games + custom sandbox for Tower of Hanoi and Knight's Tour (Pro) - Works completely offline - No ads. No tracking. No data collected. UNLOCK FULL GAME: Chapter 1 of every game is completely free. Unlock the full game with a single one-time purchase to get chapters 2-4 across all 8 games, Free Play mode (with chapter 1 Random unlockable for free by beating the chapter), custom sandbox modes for Tower of Hanoi and Knight's Tour, and all future content.

Eleven logic puzzles in one app. No ads, no timers, no energy bars — just a grid and the part of your brain that likes being asked something. THE PUZZLES Suguru — fill each cage with unique numbers Star Battle — place stars so no two touch Masyu — loop through black and white pearls Nonogram — reveal the picture from row and column clues Color Link — connect matching colors and cover the board Hashi — connect islands with bridges Light Up — place bulbs to light every white cell Kakuro — fill runs with digits that sum to each clue Fillomino — fill the grid so each number group has the right size Tents — pitch a tent next to every tree Bomb Digger — deduce where every mine is hidden Every puzzle is generated with a unique solution and is solvable by logic alone. You never have to guess. A NEW DAILY IN EVERY GAME Eleven daily puzzles, one per game, every day. Keep a streak, track which games you return to, and see your solving habits build up over the months. SIX DIFFICULTIES Easy, Medium, Hard, Expert, Master, Grandmaster. Easy is a coffee break. Grandmaster is not. LEARN ANY OF THEM Each game has a step-by-step guide that plays out on a real board, one move at a time, explaining why each move is the only one that works. No prior knowledge needed for any of the eleven. NO ADS, EVER The free tier is complete: every game, every daily, four difficulty tiers. There is no advertising anywhere in ThinkGrid and there never will be. THINKGRID PLUS For players who want the deep end: - Master and Grandmaster difficulty across every game - Daily archive — replay any past daily, back to launch - Seven extra themes: Paper, Midnight, Dusk, OLED, Blossom, Cobalt and Aurora - Solving insights: heatmaps, technique breakdowns, a monthly summary Yearly with a 7-day free trial, or a one-time payment for lifetime access. After the 7-day free trial, payment is charged to your Apple ID account. The yearly subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel it in your App Store account settings. Available in English, Dutch and Spanish. Your progress stays on your device, and you can back it up and restore it yourself. Privacy policy: https://deappmakers.nl/legal/thinkgrid-privacy/ Terms of use: https://deappmakers.nl/legal/thinkgrid-terms/