Support

Work Happy (打工小账本)

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Or use in-app Settings → Feedback & privacy.

Do I need an account? No. Core features work offline on device.
Where is my data? On your device by default. Uninstalling removes local data.
What does buyout unlock? Removes ads forever and permanently unlocks overtime & break-even. Or watch a rewarded ad for today only.
Language? Settings → Language: System / Chinese / English.
Restore purchase? Use “Restore purchases” in Settings.