The coach is part of the free app
Puzzle generation, candidate tools, every hint level, technique automation, and focused practice are available without a payment or an ad view.
There is no token balance, daily hint limit, premium technique list, or mistake counter that ends a game.
Hints open without an ad break
The technique clue and its full explanation are next to each other. You can move between them without waiting for a video or closing a promotion.
There are no reward videos, streaks, or lives. Close the app when you are done and return to the saved board later.
No account is required
The current grid, pencil notes, preferences, and undo history live in local browser storage. Closing the tab keeps your progress on that device.
Accounts are optional. Guest progress stays in this browser, while a signed-in player can choose to store progress for cross-device sync and personalization. Clear local data in the More panel removes guest data from the current browser.
Screenshot recognition has no direct charge
Screenshot OCR is an optional online action. The selected image is sent to Sudoku OCR through RapidAPI for recognition. Sudoku Pilot does not ask for payment information or charge users for each scan.
Scans can be unavailable when the site's provider quota is exhausted. Generated puzzles, manual entry, and ordinary gameplay continue without the OCR service.