Privacy Policy
This Privacy Policy explains how Apparent Group Limited (“we”, “us”) collects, uses and protects information when you use the StampBrain mobile app (the “App”). By using StampBrain, you agree to the practices described here.
1. Information we collect
Account information
When you create an account we collect the email address and display name you provide. If you continue with Google or Apple, we receive the basic profile information those providers share with us — an email address, a name where you allow it, and a stable user identifier. We never receive your Google or Apple password.
Stamp photos and identification content
When you photograph a stamp, import one from your photo library, or use the backlit watermark mode, we process the image you captured or selected in order to identify the stamp. Identification results, and any stamp you choose to save, are stored against your account so your albums are available on any device you sign in to.
Collection data
The albums you create, the stamps you file into them, and your scan history are stored against your account.
Device and diagnostic information
We collect limited technical data — device model, operating system version, app version and language — so the App can render correctly and so we can diagnose faults.
What we do not collect
StampBrain does not display advertising and does not collect advertising identifiers. It does not request the Android Advertising ID (AAID) or Apple’s Advertising Identifier (IDFA), and it contains no advertising or attribution SDK. There is therefore no advertising profile to opt out of.
2. How we use your information
We use your information to: (a) provide the identification, watermark analysis, valuation and collection-tracking features; (b) authenticate your account, verify your email address and prevent abuse; (c) deliver the subscription benefits you have purchased; (d) send operational messages such as verification codes, password resets and billing notices; and (e) diagnose faults and improve accuracy.
3. Camera and photo library
StampBrain requests camera and photo-library access only after you tap a scan or import control. We access only the photo you capture or explicitly choose. We do not scan or monitor your photo library in the background. Images sent for identification, watermark analysis or photo enhancement are transmitted through our own cloud functions to the AI provider named in section 4, processed to produce a response, and are not retained by us after the response is returned unless you save the stamp to your collection.
4. Service providers
We do not sell your personal information. We share only what each provider needs to perform its function:
- Google Firebase — authentication, database, file storage and the cloud functions that run our server-side logic. Firebase hosts your account record, your albums and any stamp images you save.
- Alibaba Cloud (DashScope / Qwen vision models) — stamp identification, watermark analysis and photo enhancement. Stamp images and the accompanying prompt are sent through our cloud functions to the model purely to compute a response.
- DeepSeek — powers the “Ask StampBrain” guided assistant. It receives the answers you give to the guided questions and your chat messages, not your account credentials.
- Adapty — subscription management and entitlement validation. Adapty receives your store transaction receipt and a pseudonymous user identifier in order to determine whether your subscription is active.
- ZeptoMail (Zoho Corporation) — delivery of transactional email such as verification codes and password-reset codes. ZeptoMail receives your email address and the message content.
- Apple and Google — sign-in where you choose it, and all subscription billing. We never receive your full payment card details; Apple and Google handle the payment.
We may also disclose information where required by law or valid legal process, to protect the rights, property or safety of our users or ourselves, or in connection with a merger or sale of assets (with notice before any transfer).
5. Data retention
We retain account data for as long as your account is active. If you delete your account, we delete or anonymise your profile, saved stamps, albums and scan history within 30 days, except where we are required by law — for example tax records tied to subscription receipts — to retain certain records for longer. Images sent for identification are processed in memory and are not kept on our servers once the response has been returned, unless you saved the stamp.
6. Your choices and rights
You can review, correct or delete your account data from the in-app Settings screen, or by emailing hello@apparentgroup.co. Depending on where you live — for example the EU, the UK, California or Brazil — you may have additional rights, such as access, portability, objection to processing, withdrawal of consent, or lodging a complaint with your data-protection authority. Our legal bases for processing are performance of a contract (providing the App), legitimate interests (security and reliability), consent where required, and compliance with legal obligations. We respond to verified requests within the period required by applicable law.
Step-by-step deletion instructions, including how to ask us to delete the account for you, are on the Delete Account page.
7. Children’s privacy
StampBrain is not directed to children under 13, and we do not knowingly collect personal information from anyone under 13. If you believe a child has provided us with personal information, email hello@apparentgroup.co and we will delete it.
8. Security
We use industry-standard safeguards, including encryption in transit, encrypted storage at rest through Firebase, and least-privilege server access. No system is perfectly secure, so we cannot guarantee absolute security; please use a strong, unique password and tell us immediately if you suspect your account has been compromised.
9. International transfers
StampBrain is operated from Hong Kong by Apparent Group Limited, and our providers operate globally. Your information may therefore be transferred across borders and stored in countries whose data-protection laws differ from those of your home country. Where required, we rely on standard contractual clauses or equivalent safeguards.
10. Changes to this policy
We may update this Privacy Policy from time to time. Material changes will be flagged in the App and the effective date above will be updated. Continued use of StampBrain after a change takes effect means you accept the updated policy.
11. Contact
Questions or requests about this Privacy Policy can be sent to hello@apparentgroup.co. We respond within a reasonable timeframe, typically within 7 business days, and within any shorter period required by applicable law.