FukidashiPrivacy policy
Effective date: 2026-11-03
About this policy
This policy covers the Fukidashi app. It lists every case where data leaves your device, who receives it, and why.
What stays on your device
- Your comic files, your library, reading progress and settings stay on your phone.
- Text recognition and basic translation run on your phone, offline once a language pack is downloaded.
- Translated pages are cached on your phone only; uninstalling the app removes them.
- Your own API key is stored in your phone's secure storage and is sent only to the provider you chose.
- There is no account, no advertising and no analytics SDK of our own in the app.
What leaves your device
| What | Who receives it | Why | Can you turn it off? |
|---|---|---|---|
| Bubble text of a chapter you translate with AI Cloud (text only, never page images), its languages and a chapter key | YNC Mobile's AI Cloud server (fukidashi.yncmobile.dev) and Cloudflare Workers AI | To translate it with AI Cloud. The text is not stored or logged | Yes |
| Your store purchase token and platform | YNC Mobile's AI Cloud server, checked with Google Play or the App Store | To confirm your plan and count monthly AI Cloud chapters | Yes |
| A random install ID, kept on the server only as a one-way hash | YNC Mobile's AI Cloud server | To give each install one free AI Cloud trial chapter | Yes |
| Request counts, language pairs and error codes, with no text or ID | YNC Mobile, through Cloudflare Workers Analytics Engine | To keep AI Cloud running and within its budget | Yes |
| Bubble text you translate with your own API key | The AI provider you choose (such as OpenRouter) | To translate it. That provider's privacy policy applies | Yes |
| Purchase and subscription details | Google Play or the Apple App Store | To process purchases, renewals and restores | Yes |
| Your IP address, when the app downloads a language pack, model or dictionary | Google (ML Kit), models.readexa.uk and modelscope.cn | To download what on-device translation needs | No |
| Diagnostic and performance data from Google ML Kit (such as model download and load events, device and app version), with no page text or images | Google, through the ML Kit library | Google uses it to measure and improve ML Kit. See Google's ML Kit terms | No |
| Web addresses you open in the built-in browser | The websites you visit | To show the page, like any browser. The app does not record what you browse | Yes |
Third parties
These services process data for the app under their own privacy policies:
- google_mlkit_translation
- webview_flutter
Your choices
You can stop all data collection by uninstalling the app.
Children
The app is not directed at children under 13.
Changes
We post every change to this policy on this page and update the effective date.
Contact
Questions: support@yncmobile.dev