Legal · Privacy
DigiBound Privacy Policy
This policy explains how Guangzhou Yixin Yiyi Information Technology Co., Ltd. (“we”, “us”, or “our”) handles information when you use DigiBound and its supporting services.
Contents
1. Scope and responsibility
This policy applies to the app, its public legal pages, and the backend used for anonymous installation authentication and App Store subscription verification. Guangzhou Yixin Yiyi Information Technology Co., Ltd. is the provider of the app and is responsible for this processing.
Apple separately controls information it processes for the App Store, Apple Account, payments, StoreKit, DeviceCheck, and App Attest. Apple’s own privacy terms apply to those services.
2. Information we process
Anonymous installation and integrity data
- A randomly generated installation UUID used as an anonymous service identity and, where applicable, as StoreKit’s
appAccountToken. - A cryptographic digest of the installation recovery credential. The server does not store the original recovery credential in readable form.
- App Attest key identifiers, public-key material, assertion counters, attestation results, one-time challenges, or DeviceCheck validation status used to detect invalid or replayed requests.
- App version, build number, trust level, registration time, last-seen time, and service timestamps.
Subscription and purchase verification data
- Apple-signed transaction and renewal information submitted by the app or delivered through App Store Server Notifications.
- Transaction and original transaction identifiers, product identifier and type, purchase environment, purchase/expiry/revocation/signing dates, quantity, price and currency, storefront, offer information, revocation reason, and verification timestamps when present.
- Derived entitlement status, auto-renewal status, offline-use deadline, and links between an anonymous installation and an Apple transaction chain.
- Notification UUID, type, subtype, signed payload, environment, related transaction identifiers, and receipt time.
Operational information
Application and hosting logs may record request time, route, response status, diagnostic events, and security events. Hosting and network providers may process network information such as IP addresses to deliver and protect the service.
We do not intentionally request your name, email address, contacts, precise location, advertising identifier, or complete payment-card information through the app API. Apple handles Apple Account and payment details.
3. How we use information
- Register, restore, and protect an anonymous app installation.
- Verify that requests come from a legitimate app instance and reduce fraud, replay, and unauthorized premium access.
- Verify App Store transactions, restore purchases, calculate current subscription entitlements, and process refunds, renewals, revocations, and billing-state changes.
- Operate, debug, secure, measure reliability, and improve the service.
- Comply with law, enforce our terms, and resolve support, billing, or security disputes.
We do not use this information for third-party behavioral advertising or sell it for money.
4. Legal bases
Where a legal basis is required, processing may rely on performance of the service contract, our legitimate interests in operating and securing the service and preventing fraud, compliance with legal obligations, or consent where applicable. The exact basis can vary by feature and jurisdiction.
6. Retention and deletion
- One-time challenges are short-lived and become unusable after expiry or consumption.
- Installation, integrity, and entitlement records are retained while needed to authenticate the installation, restore access, secure the service, and support the app.
- Transaction and server-notification records may be retained longer when needed for subscription history, refunds, disputes, accounting, fraud prevention, or legal obligations.
- Backups and security logs may remain for a limited cycle after primary records are deleted.
You may request deletion by emailing zq376647174@yeah.net. Because the service is anonymous, we may ask for the installation UUID or relevant Apple transaction information to locate the correct records. We may retain information where law permits or requires it, including for fraud, security, accounting, or legal claims.
Deleting the app or its local Keychain credential prevents the app from presenting that credential but does not by itself delete server-side records.
7. Security
We use measures designed to protect service information, including encrypted transport, hashed recovery credentials, signed Apple transaction verification, App Attest or DeviceCheck validation, one-time challenges, access controls, and restricted administration. No security method is perfect, and we cannot guarantee absolute security.
8. Your choices and rights
Depending on where you live, you may have rights to request information, access, correction, deletion, restriction, portability, or objection, and to withdraw consent where processing relies on consent. You may also complain to your local data-protection authority.
Email zq376647174@yeah.net to submit a request. We may need enough information to verify that the request relates to the anonymous installation or transaction records concerned. You can manage or cancel subscriptions through Apple’s subscription settings.
9. Children
The service is not intentionally directed to children below the minimum age required to use it independently in their jurisdiction. If the app provider learns that information was processed from a child without required authorization, it will take appropriate steps to delete or restrict that information.
10. International processing
The app provider and its service providers may process information in countries other than yours. Where required, the provider should use appropriate contractual or legal safeguards for international transfers.
11. Changes and contact
We may update this policy when the app, backend, providers, or legal requirements change. The revised version will be posted at this URL with an updated effective date. Material changes may also be communicated in the app or App Store listing.
For privacy questions or requests, contact Guangzhou Yixin Yiyi Information Technology Co., Ltd. at zq376647174@yeah.net or +86 180 2805 8490.