Privacy Policy
Last updated: July 17, 2026
Introduction
LEARN Fun LLC operates FanYi Go, a real-time Chinese-English voice translation app. This policy explains what information FanYi Go collects, how it is collected, every purpose for which it is used, and the service providers that process it.
Your Permission Before AI Processing
Before FanYi Go starts a translation session, the app separately explains that microphone audio will be sent to Google Gemini, identifies Google Gemini as a third-party AI service, describes what audio is sent and why, and asks for your permission. This is separate from Apple's microphone permission.
If you choose Not Now, FanYi Go does not start translation, request microphone access, connect to Gemini, or send microphone audio. If you allow it, audio is sent only while translation is active. You can review or withdraw this permission at any time from the shield button in the app. Withdrawal immediately stops an active session and blocks further audio sharing until you allow it again.
Information We Process
Microphone Audio
After you provide the in-app AI-sharing permission and Apple's microphone permission, FanYi Go collects live audio directly from the device microphone only while translation is active. This audio can include the words you speak and incidental nearby sounds captured by the microphone. The app streams short audio chunks directly from your device to Google Gemini so Gemini can translate spoken Chinese into English and spoken English into Mandarin Chinese. The FanYi token service does not receive conversation audio.
Pseudonymous Identifier
FanYi Go does not require registration, sign-in, or personal account information. After you allow AI audio sharing, the app creates a random Firebase anonymous-authentication identifier to obtain translation credentials and enforce abuse limits. This identifier is not sent to Gemini with conversation audio and is not used for advertising or tracking.
Technical Request Data
Firebase Authentication and Firebase Cloud Functions may process technical request metadata such as an IP address, app and operating-system version, bundle identifier, function name, authentication status, and service error details. This information is used only to operate and secure the translation service.
We do not collect names, email addresses, contacts, precise location, photos, files, payment information, advertising identifiers, or app-usage analytics.
How We Use Information
- Generate and play real-time Chinese-English voice translations
- Authenticate requests for short-lived translation credentials
- Prevent abuse and enforce service rate limits
- Diagnose failures and maintain service security
- Comply with applicable legal obligations
Conversation audio is used only to provide and secure the translation you request. FanYi Go does not use audio for advertising, tracking, profiling, or model training.
Service Providers and Sharing
We do not sell personal information, share it for cross-context behavioral advertising, or use it for advertising or tracking.
Google Gemini
With your permission, live microphone audio is shared with Google Gemini, a third-party AI service, to generate the requested translation. FanYi Go uses Gemini through a Google Cloud project with active billing, so Google's Paid Services terms apply. Under those terms, Google does not use submitted prompts, including audio, or generated responses to improve its products. Google processes this data under the Google Cloud Data Processing Addendum and may retain it for a limited period for abuse detection and required legal or regulatory disclosures.
Google Firebase
Firebase Authentication and Cloud Functions process a pseudonymous installation identifier and technical request metadata to authenticate the app, issue a short-lived Gemini credential, apply rate limits, prevent fraud, and secure the service. The identifier is not sent to Gemini with conversation audio.
Apple
Apple processes FanYi Pro subscription purchases, renewals, cancellations, and billing information under your Apple Account. FanYi Go receives only the StoreKit entitlement needed to unlock paid features.
Third-Party Protection
LEARN Fun LLC requires service providers that process FanYi Go data to protect it consistently with this policy and applicable law. Google processes paid Gemini API customer data as a data processor under the Google Cloud Data Processing Addendum, which requires technical, organizational, and physical safeguards including encryption, confidentiality, access controls, resilience, and security testing. We confirm that Google is required to provide the same or greater protection for data shared by FanYi Go as the protections described in this policy.
Read the Gemini API Additional Terms and the Google Cloud Data Processing Addendum.
Storage, Security, and Retention
Network connections use transport encryption. FanYi Go and its backend do not store conversation audio, translation history, or payment details. Stopping a translation session or withdrawing AI-sharing permission stops new microphone streaming.
The pseudonymous identifier may persist on the device and in Firebase Authentication so the app installation can continue to authenticate. Free-access and consent state remain on the device unless the app's local data is removed. FanYi server-side rate-limit records automatically expire after approximately two days. Google may retain paid Gemini API inputs and outputs for a limited period solely for abuse monitoring and legal or regulatory requirements. Authentication records, Cloud Functions request metadata, and App Store purchase records are otherwise handled according to Google and Apple's applicable service retention practices.
Your Choices and Rights
You can decline AI audio sharing before the first translation. After allowing it, use the shield button in FanYi Go to review or withdraw permission at any time. You can also stop translation, close the app, or revoke microphone permission in iOS Settings. Depending on where you live, you may have rights to request access to or deletion of information associated with you. Because FanYi does not request personal account details, we may be unable to associate a pseudonymous identifier with a specific person without information from that person's device.
Subscriptions and Payments
FanYi Go offers auto-renewable FanYi Pro subscriptions through Apple's App Store. Apple processes purchases and payment information under your Apple Account. FanYi Go uses StoreKit on your device to determine whether a subscription is active. We do not receive or store payment-card numbers, bank information, or App Store billing credentials, and we do not send subscription status to the FanYi backend.
Children
FanYi Go and the Gemini-powered translation service are intended for adults and are not directed to anyone under 18. If you believe a minor has provided personal information through the app, contact us so we can review the request.
International Processing
Service providers may process information in the United States and other countries where they operate. Data-protection laws in those locations may differ from the laws where you live. Google's Data Processing Addendum includes applicable international data-transfer safeguards.
Changes to This Policy
We may update this policy when FanYi's data practices or legal obligations change. Updates take effect when posted here, and the date above will be revised.
Contact Us
For questions or privacy requests, contact: