About this policy
Manbu Mandarin is operated by A. Salvado, based in Hong Kong. This policy explains how information is handled when you use Manbu Mandarin and contact its developer. For privacy questions or requests, email manbuapp@xaleia.com.
Learning data on your device
Manbu does not require a Manbu account or email sign-in. Your learning progress, known and reviewed words, preferences, and imported study content are stored locally on your device. Manbu does not provide account-based cloud synchronization of this information. We do not receive a server copy of your learning progress through a Manbu progress service. Information you choose to include in a support email is handled separately, as described below.
Purchases and subscriptions
Apple handles App Store purchases and payments. Manbu uses RevenueCat to obtain subscription offerings, validate purchase status, unlock eligible Premium access, and restore eligible purchases. RevenueCat also provides subscription and purchase analytics to the developer.
This processing includes a generated billing customer identifier, purchased products, transaction and receipt information, subscription status, and access entitlements. The billing SDK also sends technical information such as device model, operating system, app and SDK versions, locale or storefront, and an Apple device vendor identifier. A generated billing identifier does not mean that no data are processed.
RevenueCat also retains when the app was first seen or last opened and a country inferred from the connection's IP address for subscription analytics. Its service records include app, operating-system and SDK versions, locale and storefront information used for service operation and analytics.
Manbu does not ask you to enter payment-card details into the app. Your payment information and Apple Account are handled by Apple. Billing information is processed even though Manbu does not require its own account.
Speech and optional voice input
Text playback sends the selected text to the device's speech engine. Available voices and their processing depend on the operating system, browser, installed voices, and device settings. We do not promise that every voice works offline.
Where voice input is available, it starts when you choose the microphone control and uses the platform's speech-recognition service. Audio and recognized text may be processed by that service under its own terms and privacy settings; we do not promise that recognition stays on your device. You can decline or revoke microphone and speech-recognition permission in your device settings. Voice input is optional.
Analytics
The current native Manbu app does not run Firebase Analytics. This does not turn off the purchase and subscription processing or analytics supplied by RevenueCat. Manbu does not use advertising tracking.
When you contact support
If you email manbuapp@xaleia.com, we receive your email address, message, and any information or attachments you choose to send. We use this information to respond, investigate the issue, and handle privacy requests. Email is routed through Porkbun forwarding to a Gmail inbox used for support. These providers process the messages and associated email delivery information as part of their services.
Please send only information relevant to your request. Do not send passwords, verification codes, card or bank details, or full purchase receipts. Remove unrelated personal information from screenshots.
Retention and deletion
Local learning data remain in the app's storage until cleared through the relevant app or device controls. A reset affects the data described by that control; it does not erase billing records or support correspondence held elsewhere. Device backups may be managed separately by your device or backup provider. Manbu cannot restore learning progress from a Manbu cloud account.
Support correspondence is kept while needed to deal with your request, resolve related issues, or meet applicable legal obligations. There is no promised automatic deletion period. You may request deletion by emailing manbuapp@xaleia.com. We will explain any information that must be retained and why.
Apple and RevenueCat maintain purchase, subscription, and related service records under their applicable requirements and service arrangements. We can help with requests concerning records we control and, where appropriate, direct requests to the relevant provider. Clearing local progress or requesting deletion does not necessarily remove records that a provider must retain.
Resetting progress, deleting Manbu, or emailing support does not cancel an Apple subscription. Manage it in Settings > your name > Subscriptions. Apple's instructions: https://support.apple.com/en-us/118428
Your choices and requests
You can use Manbu without creating a Manbu account, choose whether to contact support, and decline optional voice permissions. To ask about access, correction, or deletion of information handled by the developer, email manbuapp@xaleia.com. We may ask for the minimum information needed to locate the relevant records and verify the request. We cannot retrieve local learning data that have never been sent to us. Rights and any exceptions depend on the law that applies to your situation.
Service providers and external links
Apple, RevenueCat, and the email providers described above process information for the functions explained in this policy. Their services may process information in countries other than your own. Opening an external link also involves the destination website and its privacy practices. More information:
We are responsible for selecting and using service providers with protections consistent with this policy and applicable privacy requirements. RevenueCat's published data-processing terms describe processing on the developer's instructions, safeguards against unauthorized access, and protective obligations for its subprocessors, where those terms apply. This does not mean that the developer controls Apple's independent account and payment records or every provider's separate service records.
Apple: https://www.apple.com/legal/privacy/
RevenueCat: https://www.revenuecat.com/privacy
RevenueCat data-processing terms: https://www.revenuecat.com/dpa
Porkbun email forwarding: https://kb.porkbun.com/article/10-how-to-set-up-email-forwarding-service
Support and privacy website
These pages are hosted using OpenAI Sites. The pages contain no contact form, developer-added JavaScript, visitor analytics, advertising trackers, cookies, or local storage. The page images and styles are served from this website; no external font service is used. Email links open your email application.
The hosting service receives connection information, such as your IP address, requested page, and browser details, to deliver and secure the website. The hosting platform may process technical logs or use its own platform technologies under its applicable privacy practices; the statements above about developer-added features do not promise that the provider keeps no logs or uses no cookies. Website processing is separate from local learning data in the app.
Hosting provider privacy information: https://openai.com/policies/privacy-policy/
Changes
We will update this page when these practices change and revise the date above. For questions, contact manbuapp@xaleia.com.