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In the app, go to Settings → Delete Account. Export a backup of your work first; after you confirm, your account, cloud books and on-device data are all erased and cannot be recovered.

Your book is stored on your device first, so you can write offline. After you sign in, it can sync to your other devices. When you use AI writing or checking, the content needed for that task is sent to the model provider; see the privacy policy for the details.

Choose “Report an issue or content” in the app’s settings, or email us. Tell us what happened, and attach relevant screenshots if you can, to help us investigate.

Ficaryn runs on iOS and Android phones, with an English, Simplified Chinese or Traditional Chinese interface. You can write books in any of the three languages.

Yes. Your book is yours and you can export it any time, but both platforms ask you to disclose AI use. On Amazon KDP, declare chapters the AI wrote as “AI-generated” when you publish; text you wrote yourself and only edited with AI counts as “AI-assisted” and does not need declaring. On Royal Road, give the story the AI-Generated or AI-Assisted tag that fits. Check each platform’s current rules before you publish.

Sign in with the same account and stay online; your synced books and notes will download to the new device. The first sync depends on your connection and the size of your books.