iCloud: Habits and wins can sync via iCloud Key-Value when you’re signed into iCloud. If something looks out of sync, check that you’re on the same Apple ID and that iCloud is enabled for the device.
Purchases: WinDots Pro is a one-time unlock. Use Restore purchases on the paywall or in Settings if you reinstall or use a new device with the same Apple ID.
Data on this device: You can clear all habits and history from Settings if you need a fresh start (this cannot be undone).
Privacy
Our privacy policy describes what data stays on your device and how iCloud fits in: WinDots privacy policy.