Privacy Policy
Effective date: October 31, 2026
This is a translation. If there is any inconsistency, the Simplified Chinese version prevails. 简体中文版
Three things to know first: Your book is stored on your device first; it syncs to your other devices after you sign in; when you use AI assistance, the content needed for that task is sent to the model provider. You can export your work, and you can delete your account and books in the app.
This policy explains what data Ficaryn processes, why, and how you can manage your books and account.
1. Information we process
Writing, syncing and AI assistance use the following information:
- Account information: When you sign in with email, Apple or Google, we may process your name, email address, user ID and sign-in records to verify your identity, manage your account and sync your books.
- Book content: Book titles, chapter text, characters, lore and outlines are stored on your device first. After you sign in, this content syncs to the cloud over an encrypted connection. In the cloud, access to books is restricted to your account; we use administrative privileges only as needed to provide the service, troubleshoot, or meet legal obligations.
- Content needed for AI assistance: When you use continuation, rewriting, checking or planning features, the content needed for that task is sent to the model providers we work with.
What may be sent: the current chapter or related passages, characters and world lore, foreshadowing, summaries of earlier chapters, and the book plan. Different features need different content. Ficaryn does not use your book to train its own models; how third-party providers process request data is governed by their applicable terms and privacy policies. - App interactions and quota information: When you are signed in and use AI features, we record the number of AI calls associated with your account, daily quota usage and short-lived rate-limit counters, in order to show remaining allowance, enforce service limits, and prevent abnormal calls and abuse. This information is not used for advertising profiles.
- Purchase and subscription information: When you buy Plus, payment is handled by the Apple App Store or Google Play, and we never receive your card or payment-account details. To confirm whether a subscription is active, we process the subscription records linked to your account through RevenueCat, including the product, purchase and expiry dates, trial status, auto-renewal status, the store involved, and transaction identifiers.
- Diagnostics: If crash reporting is enabled, we may collect device model, system version, crash reports and performance data to troubleshoot issues.
2. Third-party services we use
Account sign-in, cloud syncing, AI assistance and troubleshooting may involve the following services:
| Provider | Used for | Data handling and official link |
|---|---|---|
| Cloudflare | Account data, cloud storage of synced books, verification code emails, and relaying AI requests | Processes request transport and the necessary service logs; account data and synced books are stored separately for each account. AI results are held for at most 24 hours after completion so you can retrieve them in the app, and are deleted as soon as you handle them. cloudflare.com |
| DeepSeek | Processing AI prose, planning, check and summary requests | Processes request data under the terms applicable to the interface used. deepseek.com |
| Zhipu AI | Processing AI prose writing and polishing requests | Processes request data under the terms applicable to the interface used. bigmodel.cn |
| RevenueCat | Confirming Plus subscription status (purchase, renewal, cancellation, refunds) | Processes your user ID and the store-provided subscription records, and never sees payment-card details. When your account is deleted, the subscription records linked to it are deleted there as well. revenuecat.com |
| Apple App Store / Google Play | Payment, renewal, cancellation and refunds for Plus | Payment information is processed under their respective terms and privacy policies. Apple privacy policy |
| Sentry | Crash and performance troubleshooting, when enabled | May process error reports and basic device information. sentry.io |
| Expo / Apple Push Notification service (APNs) / Google Firebase Cloud Messaging (FCM) | Notifying you when a background AI task finishes, if you allow notifications; delivered through APNs on iOS and FCM on Android | Notification payloads contain the device push token, a generic notification text (such as "Book plan is ready") and an opaque task ID, but no book titles, chapters or writing. On Android, FCM also uses an app installation identifier and necessary app and device information to create and maintain notification delivery. When you sign out, we revoke the push registration on our servers (or once you are back online). After revocation our servers keep only an install ID, an irreversible hash of the install credential and a version number (no token or account), used to reject stale requests; pending delivery-receipt records may still contain the token used for sending and are kept for at most 23 hours. expo.dev · Firebase privacy and security |
| Apple / Google | Optional fast sign-in | The information provided depends on the sign-in method you choose. apple.com |
3. Data security and deletion
- Encryption in transit: Connections between the app and cloud services use TLS / HTTPS.
- Offline writing: While signed out, your book stays on your device; AI features require you to sign in and be online.
- Export and deletion: Export your book before deleting your account. In the app, choose Settings → Delete Account and confirm; your account, cloud books and on-device data will be erased. This cannot be undone.
- Deleting your account does not cancel subscriptions: Deletion removes the subscription records kept by us and RevenueCat, but charges are made by the store; cancel your subscription in the App Store or Google Play first.
4. Children’s privacy
This app is not directed at children under 13 (or the minimum age required by local law). We do not knowingly collect personal information from children. If we learn that we have collected it inadvertently, we will delete it as required by law.
5. Contacting us and your data rights
If you have questions or comments about this privacy policy, or wish to exercise your rights to access, export or delete your personal information, contact us at any time:
Official support and privacy contact: support@ficaryn.com
6. Updates to this policy
We may update this policy from time to time as the product evolves or as compliance requires. For material changes, we will notify you through app update notices or a prominent notice.