1. About this Policy
This Policy explains how personal data is handled in Braino, an iOS app offering games, daily training, practice tests, achievements and subscriptions. In this Policy, “we,” “us” and “our” refer to the provider of Braino.
Braino does not currently require a separate registered account or social-network login. This does not make all data anonymous: App identifiers, transaction records and usage events may relate to the same installation or user. This Policy provides information; reading it or using the App does not replace consent where consent is required.
2. Information handled by the App
Progress and preferences on your device
Braino stores game progress and unfinished sessions, daily training selections and completion history, streaks, achievements, language and accessibility settings, and practice-test answers, progress, timing and results locally to operate those features. A “color blind mode” preference is a display setting, not a medical diagnosis. Test results describe in-app performance, not a clinical assessment.
Local storage is separate from the analytics and service transmissions below. Interaction events may indicate that you played a game, used a feature or completed a test, even when the underlying saved session remains local. Material you voluntarily include in feedback or a shared results card leaves the App for that purpose.
App identifiers and service requests
We generate a random UUID and store it in the iOS Keychain. We use it to identify the App installation in backend user-state requests, feedback and purchase-related processing. It is also supplied to Apple as an app-account token for purchases and to Adjust as a callback identifier. It is not your Apple Account password or a device hardware serial number. Keychain storage may survive an ordinary uninstall, so reinstalling does not necessarily create a new identifier.
Startup service requests can include this UUID, the App version, a Firebase app-instance identifier and an Apple AdServices attribution token when available. These requests obtain user and subscription state and support attribution of App acquisition. Backend and service providers receive network information such as IP addresses when handling requests; security logs may include request time, status and diagnostic details.
Usage analytics and diagnostics
Braino uses Firebase Analytics for information about App sessions, screens and controls used, navigation, interaction positions, game and test interactions, onboarding, purchase and restoration outcomes, errors and operation durations. Device-related event information includes operating-system version and screen dimensions. SDKs also process their installation identifiers and technical information needed to deliver these services.
Firebase Crashlytics handles crash and non-fatal error information, such as stack traces, App and operating-system versions, device characteristics and diagnostic identifiers. We use these reports to find defects and improve reliability. These services can operate independently of the advertising tracking prompt; denying advertising tracking is not a switch that disables all diagnostics or usage analytics.
Subscriptions
Apple processes payments. The App handles verified subscription information such as product and transaction identifiers, purchase and expiry times, trial status, price and currency when provided, and revocation or entitlement status. We use this information to provide access, restore purchases, prevent duplicate processing and measure purchase outcomes. Purchase-state requests also support the backend's user and subscription state.
We do not receive your full payment-card details or Apple Account password. Subscription conversion events can be sent to the measurement services described below; those events are not inherently anonymous merely because they use transaction or installation identifiers.
Support messages and selected photos
If you submit feedback, we receive your selected issue category, message, optional email address and images you choose to attach, along with the App UUID and version. We use them to investigate and respond to your request. The system photo picker provides the images you select; it does not give Braino unrestricted access to your photo library. Uploaded images are resized or compressed for transmission. Please remove unrelated personal information before sending them.
Sharing initiated by you
Braino can create an achievement or test-result card on your device. If you choose to share it, the selected recipient or service receives the card and any message you add. The recipient's handling is subject to its own practices. Opening the system share sheet alone does not constitute publishing a card to a public Braino profile.
3. Purposes and, where applicable, legal bases
Providing requested features: operating games and tests, retaining progress, checking paid access, restoring purchases and answering support requests. Where applicable, the legal basis is performance of our agreement with you or steps you request before entering that agreement.
Reliability and security: debugging, preventing fraud and abuse, investigating failures and maintaining service integrity. Where permitted, we rely on legitimate interests balanced against your rights, or legal obligations where those apply.
Usage measurement and service improvement: understanding feature use and improving navigation and performance. Where laws require consent for device access or this processing, consent is required; a general interest in improvement does not override that requirement.
Acquisition and conversion measurement: evaluating advertising campaigns, installations, onboarding, trials and subscriptions. Tracking and other consent-dependent processing require the relevant permission or consent.
Legal and purchase administration: responding to lawful requests and retaining records required for financial obligations or disputes, under the applicable legal obligation or other lawful basis.
The bases and rights available depend on your location and the processing involved. We do not use the practice-test result to make a decision about you that has legal or similarly significant effects.
4. Service providers and recipients
Apple: App distribution, StoreKit payments and entitlements, and AdServices acquisition attribution. Apple handles its services under Apple's privacy information.
Google Firebase Analytics and Crashlytics: App usage measurement and diagnostics described above. See Firebase privacy and security information and Google's Privacy Policy.
Adjust: acquisition and conversion measurement. Braino supplies the App UUID as a callback parameter and sends first-open and subscription conversion events with deduplication information associated with transactions. The SDK can also process device, network and attribution information according to its configuration and permissions. See Adjust's Privacy Policy.
Meta App Events: App activation and onboarding-completion, trial-start and subscription events. Conversion events can include product and transaction identifiers, and amount and currency when available. Advertising-identifier collection is configured according to the system tracking authorization. See Meta's Privacy Policy.
Our backend and support providers: user-state and feedback services receive the information needed for the requests described in Section 2. The current App communicates with our service at wordads.muguangapp.com.
Recipients you choose: services or people selected when you share a card.
Information may also be disclosed when required by law or reasonably necessary to investigate fraud or protect legal rights and safety. Any transfer in a business reorganization must remain subject to applicable privacy requirements and appropriate notice. Providers may act on our instructions or have independent responsibilities for their own services; their policies do not replace our responsibility for the data we disclose.
5. Advertising measurement and your tracking choice
Braino uses advertising-measurement services even though the current App does not display third-party banner or rewarded advertisements. Where the iOS tracking prompt is presented, you can allow or deny permission. You can change your choice in iOS Settings → Privacy & Security → Tracking. Refusal does not prevent use of the available free features or purchase of a subscription.
The current implementation may initialize Adjust and Meta after either an allowed or denied tracking response. Adjust requests can still include the App UUID, and conversion events can still be transmitted. Denying tracking therefore must not be understood as stopping every service communication. Apple AdServices attribution and operational analytics are also distinct from access to the advertising identifier.
Where permission or consent is required for tracking, sending an alternative identifier does not remove that requirement. This Policy itself does not grant tracking permission.
6. Refund-related consumption information
Apple may request additional consumption information when reviewing a refund. If we use such a process, we will first give the required notice and obtain the valid consent required by Apple and applicable law for the information to be sent. We will limit it to the relevant purchase and usage information and describe the actual categories at that time. We do not treat acceptance of this Policy or the act of using Braino as blanket consent. Apple determines the refund outcome under its rules and applicable law.
7. Retention, removal and security
Local progress and preferences remain until changed or removed through the App's applicable behavior or device storage controls. Removing the App normally removes its local application data, but Keychain identifiers, device backups, Apple purchase records and information already received by service providers may remain. Removing the App does not cancel a subscription or automatically delete server-side data.
For information we hold on servers, retention is determined by the purpose: user-state information while needed to provide access and resolve entitlement issues; support information while resolving the request and any related dispute; diagnostics and analytics for the period needed to identify faults and assess service performance; and transaction-related records for applicable financial, fraud-prevention and legal obligations. When information is no longer needed, it should be deleted or irreversibly anonymized, subject to legal holds and backup lifecycles.
The App uses HTTPS for its backend requests and iOS Keychain storage for its persistent UUID. These measures reduce risk but do not guarantee absolute security. We limit handling to the purposes described here; operational access and service-provider safeguards must be maintained by the operator.
8. International processing
Using Apple, Google, Adjust, Meta and backend providers may involve processing outside your country, where privacy laws differ.
9. Your choices and rights
Depending on applicable law, you may request access, correction, erasure, restriction or a portable copy of personal data, object to certain processing, or withdraw consent for future consent-based processing. Withdrawal does not invalidate processing already lawfully performed. You may also complain to the competent privacy regulator. Rights may be subject to lawful verification and exceptions, including required record retention.
Send a privacy request through Contact us in the App. Because Braino has no separate account login, we may need proportionate information to locate the relevant installation, support case or transaction. Do not send your Apple password or full payment-card details. We will explain any information needed to verify the request and any lawful limitation on it.
You can decline optional feedback attachments, choose not to share results, and manage tracking permission through iOS settings. The current App does not provide a general in-app analytics opt-out or a self-service server-data deletion button. Contact us to exercise applicable rights. Apple handles changes to its own account and purchase records under its separate policies.
10. Children
Braino is intended for users aged 13 or older, or the higher minimum age required locally. We do not intend to collect children's data without the authorization required by law. If you believe a child below the applicable age has provided personal data, contact us so we can investigate and take required steps, including deletion where appropriate. The App Store's content age rating does not itself establish privacy consent or authorize advertising tracking.
11. Changes and contact
We will update the effective date when this Policy changes and provide additional notice for material changes where required. If a new purpose or activity requires consent, we will seek it separately rather than treating publication of an updated policy as that consent.
For privacy questions and requests, use Contact us in the App.