QuMarkPrivacy Policy
Updated October 26, 2026
On-Device Image Processing
QuMark is provided by individual developer shenfei. Image editing, text layout and automatic detection run on your device. Images and detection results are not uploaded to developer servers. This version requires no account and includes no ads or third-party behavioral analytics.
Data Stored on Your Device
To support editing, the app stores one draft (including the source image and masks), custom patterns, recent patterns, language, appearance and text watermark settings on your device. The draft remains until replaced or cleared; patterns and preferences remain until deleted or the app is removed. The draft is excluded from system backups. Other local data may be backed up according to your device settings.
Photos, Clipboard and Sharing
The system photo picker gives the app only the images you select. Permission to add photos is requested only when saving to Photos. Copy Image writes the processed image to this device's clipboard; the app does not proactively read the clipboard or sync it through Universal Clipboard. Apps you paste into can receive the image. When sharing, the receiving app or service processes the image under its own privacy policy.
Purchases and Apple Services
Apple provides purchases, refunds and restoration. The app uses StoreKit to read product prices and verified purchase entitlements. It does not receive your payment card details or payment passwords. Apple may process store transactions and diagnostics you choose to share under its own privacy policy.
Manage and Delete Data
You can clear the draft and delete custom patterns on the home page, change preferences in Settings, and erase watermark text in the watermark editor. Deleting the app removes its local app data; exported images, clipboard content and system backups must be managed separately. Photo permissions can be managed in iOS Settings.
Contact and Policy Updates
Operator: shenfei (individual). For privacy or usage questions, contact ishenfei@gmail.com. This policy will be updated as features change. Material changes to data processing will be communicated before taking effect, and any consent required by law will be obtained.