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One wrong answer ends a run by design — that's the whole game. Your best streak is saved separately and never resets on its own.

No. The app works entirely offline — every number, fact, and streak calculation happens on your device.

Yes — your best streak automatically syncs between a paired iPhone and Apple Watch, directly between your own devices and never over the internet. If the two still show different numbers, make sure you've opened Prime Time on both devices at least once since your last update — that first launch is what kicks the sync off.

Email the address above with what you were doing, what you expected, and what happened instead — the specific number on screen helps a lot if the bug involves a particular fact or prime check.