Your photos are processed to remove watermarks and are automatically deleted from our servers within 24 hours.
No account is required. Email sign-in and Sign in with Apple are optional and only used to restore purchased credits across devices.
We do not run ads, track you across apps or websites, or sell your personal information to anyone.
You can delete your account at any time directly in the app (Settings → Account → Delete Account).
1. Scope of this Policy
This Privacy Policy describes how MarkClear ("the App", "we", "us") handles personal information when you use the MarkClear iOS app or the MarkClear website. It applies to all features of the service, including photo processing, optional sign-in, and in-app purchases.
2. Information We Collect
Information you provide
Email address (optional). If you choose email sign-in, we use your address to send a one-time verification code and to identify your account so your purchased credits can be restored on a new device. Verification codes are stored only as short-lived cryptographic hashes.
Apple sign-in identifier (optional). If you use Sign in with Apple, we receive an Apple-provided identifier (and your name or hidden relay email only if you choose to share them). We never receive your Apple ID password.
Information generated when you use the App
App-generated device identifier. On first launch the App creates a random identifier used to grant and track your free quota and to authenticate requests. It is not tied to your Apple ID, phone number, or advertising identifiers.
Photos you submit. The image (and the mask/selection marking the watermark) you upload for processing. See Section 4 for how photos are handled and deleted.
Purchase records. When you buy credits via Apple In-App Purchase, we receive transaction details (such as the transaction identifier, product identifier, and purchase date) so we can credit your balance and, where required, process refunds. Apple handles the payment itself; we never see your card number or payment credentials.
Technical logs. Our servers keep standard request logs (for example IP address and timestamps) for security, rate limiting, and troubleshooting. These logs are retained only for a limited period.
Local data on your device. Your editing history and session token are stored locally on your device (iOS history is kept on-device only; you can clear it in the app). Website sign-in state is stored in your browser's local storage.
3. How We Use Information
To provide the core service: detect watermarks, process the photos you submit, and show you results.
To operate the credit system: grant the free quota, deduct credits per edit, and add credits after a purchase.
To let you optionally sign in and restore purchased credits when you switch devices.
To keep the service secure and prevent abuse (rate limiting, fraud prevention, enforcing the free quota).
To comply with legal, accounting, and App Store requirements, including processing refunds through Apple.
We do not use your information for advertising, profiling, or automated decision-making.
4. Photo Processing and Retention
Photos you submit are uploaded over an encrypted connection solely to perform the requested edit.
Uploaded images, masks, and results are automatically and permanently deleted from our servers within 24 hours. They are not used to train any model and are not shared for any other purpose.
On iOS, a first-pass watermark detection may run entirely on your device (using Apple's on-device framework); that analysis never leaves your phone.
Cloud processing is performed by the AI providers listed in Section 5. We transmit only the image and selection needed for the edit — never your account credentials or contact details.
You should only upload images that you own or have the right to edit. Processing results are yours; you can save or delete them on your device at any time.
5. Third-Party AI Processors
To perform edits we send the submitted image (and mask) to the following providers, which process it on our behalf for this single purpose:
Processor
Purpose
What they receive
Replicate (Replicate, Inc.)
Fast watermark removal (image inpainting)
The image and mask for the current task
Google (Gemini API, Google LLC)
High-quality edits and cloud watermark detection
The image (and, for detection, a request to locate watermarks)
These providers process data under their own terms and privacy policies (available on their websites). We do not send them your email address, identifiers, or any other account information with the image.
6. Other Third Parties
Apple. Purchases, refunds, and Sign in with Apple are handled by Apple under Apple's own privacy policy. Apple may share with us the transaction data described in Section 2 so we can credit or reverse your balance.
Infrastructure providers. The service runs on cloud hosting used only to run the backend (computation and temporary file storage), and email delivery providers may be used to send verification codes to the address you entered. Each is bound to process data only on our instructions.
We do not sell, rent, or share your personal information with any other third party, and we do not disclose your photos to anyone.
7. Data Retention Summary
Data
Retention
Uploaded photos, masks, results
Deleted automatically within 24 hours
Email verification codes
Stored hashed; expire within minutes and are purged
Device identifier / account records
Kept while your account is active; anonymized on account deletion (Section 9)
Purchase and refund records
Retained as required for accounting, tax, and App Store obligations, unlinked from your identity after account deletion
Server logs
Limited period for security and troubleshooting
On-device history (iOS)
On your device only, under your control
8. Data Sharing and Advertising
We do not display third-party ads, do not embed advertising or cross-app tracking SDKs, and do not link your data with third parties for marketing. Your information is shared only as described in Sections 5 and 6, or if we are legally required to do so.
9. Account Deletion
You can delete your account at any time in the app: Settings → Account → Delete Account (or the Delete button in the account dialog on the website).
Deletion takes effect immediately: your email address and sign-in identifiers are erased, your device identity is rotated, your remaining tasks and images are removed, and any remaining credits (including purchased credits) are forfeited — please use your credits before deleting.
For accounting and App Store reasons, anonymized purchase records (not linked to you) are retained as described in Section 7.
To request deletion of specific data without deleting your account, contact us at 2894599828@qq.com.
10. Data Security
All traffic between the app/website and our servers is encrypted with HTTPS/TLS.
Sessions use short-lived signed tokens; on iOS your session token is stored in the system Keychain.
Administrative access to our systems is protected and limited to the developer for support and abuse prevention.
No system is perfectly secure; please contact us if you become aware of any issue.
11. Children
The App is not directed to children under 13, and we do not knowingly collect personal information from children. If you believe a child has provided us personal information, contact us and we will delete it.
12. Your Rights and Choices
Depending on your jurisdiction (for example the EEA, UK, or California), you may have rights to access, correct, export, or delete your personal information, and to object to or restrict certain processing. Because we keep little data and photos auto-delete within 24 hours, the most direct way to exercise these rights is:
Delete everything: use in-app account deletion (Section 9) — immediate and complete for photos and account data.
Access or specific requests: email us at 2894599828@qq.com; we will respond within a reasonable period.
Stop using the service: simply uninstall the app; nothing further is uploaded from your device.
13. International Data Transfers
Our servers operate in the United States. If you access the App from outside the US, your information (including photos you submit) will be transferred to and processed in the US and by the providers listed in Section 5 in their respective regions.
14. Changes to this Policy
We may update this Policy to reflect changes in the service or the law. The "Effective date" at the top shows the latest revision; material changes will be highlighted in the App or on the website. Continued use after an update means you accept the revised Policy.
15. Contact Us
If you have questions about this Policy or your data: