Practice at your own pace
Work through a board and try techniques. Basic Practice is available without signing in with Google or Apple.
NUMBER-PLACEMENT PUZZLES, ONE REASON AT A TIME
Understand your next move.
NonaTrace helps you learn number-placement puzzles through practice, lessons and explanations. Build your understanding, one move at a time.
INVITATION-ONLY BETA
Learn. Practice. Find your next step.
A space to think, with help when you need it.
Follow your progress in Ranked
Play with online evaluation and review your progress. During the beta, online games use our development service.
Hints that reveal one step at a time
Each newly acquired paid hint stage uses one credit. Reopening the same acquired explanation uses no additional credit.
Learn with the app’s explanations.
Explore techniques in the lesson screen, then return to Practice and apply what you learned.
INVITATION-ONLY BETA
Try the current beta.
NonaTrace is currently available to invited iOS and Android testers. Use your existing TestFlight or Google Play test invitation. This is not a general Store release. A Google or Apple sign-in is required for new hints and purchases.
Beta purchases are sandbox tests. Proceed only when the purchase sheet identifies a no-charge test. If it shows a real charge, cancel and contact support.
Read the beta guideQuestions or feedback?
For access, account deletion or purchase-test questions, contact our support team. Do not send passwords, verification codes or raw receipts.