Privacy Policy
This policy covers VisionTune AI (“the App”) and its product website, provided by Pan Xueyan, an individual developer. No App account is required. Gesture recognition and music playback run on your device; we do not upload camera frames, hand landmarks or music to an operator server. Apple purchases, optional diagnostics, contacting support and visiting the website have the separate scopes described below.
1. Camera: purpose, permission and stopping
The front camera enables touch-free music control. Apple's on-device Vision hand-pose model calculates up to 21 landmarks of one hand to recognize play, pause, skip, volume and seek gestures. The interface shows synthetic honeycomb and hand animations, not the real camera feed. Frames and landmarks are used in memory for recognition and feedback, not recorded, photographed, persistently saved or uploaded, and not used for face recognition, identification, advertising or model training.
The App explains the purpose before requesting system camera permission; it requests permission only after you choose Continue. You may choose Not Now or deny the system request and still import music and use basic on-screen playback controls. Once authorized, the camera may run whenever the App is in the foreground and gesture control is enabled, including while music is paused or settings or legal pages are open; it is not limited to active playback.
Turn off the gesture-control master switch in App settings to stop recognition. Going to the background also stops the camera and clears current gesture state. You may revoke permission in system Settings → Apps → 视聆 / VisionTune AI → Camera (the path varies by OS version), without losing basic manual playback. The current App requests no microphone, photo-library, location, contacts or cross-app tracking permission and does not depend on Apple Intelligence.
2. Selected files, preferences and system playback
The system file picker gives the App access to audio or lyric files you select. Audio copies are stored in the App's Imported Music sandbox directory without modifying the originals. Titles, artists, albums, artwork and lyrics come from embedded metadata or LRC files you import, not online song recognition, lyric searches or artwork downloads. Deleting a song removes the App's copy and associated lyrics, not the external original.
Preferences such as appearance, language, player skin, gesture settings, guide progress and the diagnostics switch, plus an entitlement cache for restoring the interface, are stored locally. The sleep timer applies to the current run and is not restored after relaunch. For lock-screen and system playback controls, the App supplies the current title, artist, album, artwork, duration and progress to the device's Now Playing service.
The App has no operator-hosted cloud sync. Selecting files from iCloud or another cloud drive may use that provider's network services. Local files may also enter device backups according to your Apple backup settings; this is not an operator music-upload service. Keep your own backups of important files; we cannot recover deleted local files for you.
3. Apple purchases and entitlement verification
Pro currently offers monthly and yearly auto-renewable subscriptions and a lifetime purchase. Apple handles products, trial eligibility, purchases, verification, renewals, restores, refunds and revocations through StoreKit. The App may query Apple for products and valid entitlements on launch or return to the foreground. Purchase and restore buttons initiate the corresponding system flows, so the App as a whole is not entirely offline.
On your device, the App processes Apple-provided product, transaction and original-transaction identifiers, purchase and expiration dates, revocation and renewal status, trial eligibility, storefront region and transaction environment to determine access and explain purchase results. We do not receive your Apple account email, password or card details or send transactions to our own validation server. Apple's privacy policy and terms govern payments and Apple account processing.
4. Optional diagnostics and sharing
Diagnostic logging is off by default. You can enable it in Settings → About → long-press the version number. When enabled, it records timestamps, App and OS versions, language, feature state, camera capabilities and errors, file-processing information, and product, purchase and restore results. Purchase diagnostics may include trailing transaction-identifier fragments, purchase and expiration dates, renewal state, storefront region and test/production environment. Logs may include filenames or error context and are not guaranteed to be completely anonymous.
Logs remain local. The main log is capped at 256 KiB and keeps more recent content when full. Logging stays enabled until you turn it off; turning it off stops new entries but preserves existing logs for review or clearing. Clear removes the main log and legacy crash logs. This version installs no custom crash collector; iOS diagnostics and sharing with Apple are controlled separately by system settings.
The App never sends logs automatically. Logs reach the clipboard or your chosen service only when you copy them or use the system share sheet and choose a recipient. Review them first and do not include passwords, full payment details or unrelated private files. Clearing logs in the App cannot remove copied or previously sent material; recipients handle it under their own rules. Material sent to us is used only for communication and troubleshooting.
5. Website, support and external services
Opening the website or an online policy makes a web request. Website hosting services process technical information such as IP address, requested path, time and browser to serve pages and maintain security, and may retain access or error logs. The site uses browser local storage for display preferences such as theme and language; you can clear site data in your browser. VisionTune product pages have no advertising or behavioral-analytics SDK. Offline legal pages in the App can be read without opening the website.
If you contact dayflow.cn@outlook.com, we and the email provider receive the email address, message, attachments and other material you choose to send, only to reply, handle your request and troubleshoot. You may ask us to delete support material that is no longer needed, except where retention is legally required. Email and external sharing services you choose may use global infrastructure under their providers' rules.
The App contains no third-party advertising, analytics or tracking SDK, does not sell or rent your data, build user profiles or send gestures to third-party cloud AI. Apple system frameworks and the file, payment, browser, email or sharing services you choose participate within the scopes described above; this does not mean no external service is involved.
6. Retention, deletion and privacy requests
Music and preferences remain until you delete the relevant content, reset the applicable settings or delete the App; system offloading may preserve data. Section 4 explains diagnostics retention. Apple purchase records and system backups must be managed through the relevant Apple services. Deleting the App does not cancel a subscription. There is no App account or account-deletion process.
Use on-device controls to manage files, permissions and logs, or contact support to request access to, correction or deletion of support material we received. We may need appropriate verification of identity or request scope to protect that material, but will not ask for your Apple account password. We handle requests within applicable legal deadlines. The iOS sandbox, permissions and local processing reduce risk but cannot guarantee absolute security.
7. Minors, updates and contact
The App is not specifically directed to children. Minors should use and purchase with guardian guidance. Where processing requires guardian consent by applicable law, including for children under 14 where applicable, obtain that consent first. We do not proactively collect children's personal information through the App. Contact us if a minor has mistakenly sent information to support.
Updates to this policy will be dated. If future features introduce new purposes, recipients or permissions, we will provide appropriate explanation and obtain legally required authorization. This policy does not replace specific system permission or consent for new sharing. For privacy questions and requests, email dayflow.cn@outlook.com with “VisionTune Privacy” in the subject.
Operator and privacy contact: Pan Xueyan, individual developer · dayflow.cn@outlook.com