Gridtrail is a single-player number-path puzzle for iPhone. Draw one path through every numbered cell, in order, and fill the whole grid. There is a free Daily puzzle and Endless mode, plus an optional one-time purchase, Gridtrail Pro, that unlocks larger boards and harder difficulties. Gridtrail has no accounts, no analytics, and no ads, and it works fully offline.
Trace a single path from 1 to the last number, visiting each number in order. Move only to a neighboring cell. Fill every cell exactly once. Every puzzle has exactly one solution.
Gridtrail Pro is a one-time purchase, not a subscription. It unlocks 7×7 to 9×9 boards and the Hard and Expert difficulties, permanently.
Open Settings (the gear icon) and tap Restore Purchases. Tapping any locked board size also offers Restore Purchases.
At local midnight, based on your device's clock and time zone.
No. Gridtrail works fully offline. Every puzzle is generated on your device.
Refunds are handled by Apple, not by us. Visit reportaproblem.apple.com and select the Gridtrail purchase.
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