Uyen is operated by ONLYHUMN LLC (“we”, “us”), 1007 N Orange St. 4th Floor, Suite #5984, Wilmington, Delaware 19801, United States. We are the controller of the personal information described in this policy.

For privacy questions or requests, write to [email protected].

We collect only what the service needs to work. We do not buy or sell personal information from or to data brokers.

Account data. When you sign in with Google or Apple, we receive an identity token and store a stable provider subject, and may store your email if the provider includes it.

Support and reports. If you email support or send an in-app conversation report, we receive the message content you choose to send, plus basic technical context needed to investigate.

Waitlist. If you join the waitlist on uyen.app, we store your email and any optional note you include so we can tell you when Uyen is available and send related product updates. Write to us to leave the list.

When you are signed in, learning progress, preferences, vocabulary, conversation archives, and any interests text you add sync to your Uyen account. A copy may also stay on your device. Export and import of a learning backup is something you start.

Microphone audio is processed for live Practice. Audio and related text go to Google (Gemini) through Uyen’s hosted service. We do not store raw practice audio on Uyen servers.

When you use a hosted Uyen account, our API (including the Cloudflare Worker at api.uyen.app or staging) stores account, session, and learning records needed to authenticate you and sync progress.

We store purchase and subscription records for conversation-minute packs and for Student and Professional plans, plus the minute ledger that credits your account. Apple and Google process the payment.

The public support form on uyen.app uses Cloudflare Turnstile; the waitlist form uses a hidden anti-bot field and rate limits instead. Support messages and in-app reports are delivered by email through Cloudflare Email Service to [email protected], where Google Workspace hosts our inbox.

We use personal information to provide sign-in, sync learning progress, operate hosted Practice and minutes, respond to support and safety reports, secure the service, and meet legal duties.

We do not sell your personal information.

Google and Apple provide sign-in. When you buy a pack or a plan, they also process the charge. If you ask a store for a refund, we may send that store a summary of how much of the purchase you used, your account age, and your purchase and refund history with us, so it can decide the request.

Google (Gemini) processes audio and text when you practice, including topic search when you use that feature.

Cloudflare processes traffic to uyen.app and our API, sends support and report email, and runs Turnstile on the public support form. Google Workspace hosts the [email protected] inbox.

We share information when required by law, to protect rights and safety, or with service providers who process data for us under contract.

Account records remain while your account exists. You can delete your account in the app (More → Delete account), or email [email protected] from the address on your account to request deletion. See also https://uyen.app/support/.

When you delete your account we remove sign-in identities, sessions, synced progress, Practice session records, and any waitlist row for your email. We keep purchase and minute-ledger rows needed for refunds, accounting, and fraud prevention, linked only to an opaque account ID. We also keep your sign-in email and a last Talk summary (time, close reason, charged minutes) for up to 12 months for support and fraud review, then delete that log. That log does not include a transcript or audio. Identity-keyed minute credit and refund debt may remain so a later sign-in with the same Apple or Google account restores balances fairly.

Waitlist emails for addresses that never created an account remain until you ask us to remove them (write to [email protected] from that address), or until we no longer need the list for launch notices.

Device archives remain on your device until you delete them or uninstall the app. Account deletion does not erase a local archive that never left the device.

We may retain limited records needed for security, fraud prevention, accounting, or legal obligations.

Uyen is not directed at children under 13. Do not create an account if you are under 13.

We operate from the United States. If you use Uyen from another country, your information may be processed in the United States and other countries where our providers run.

We may update this policy. We will change the “Last updated” date on this page when we do. Continued use after an update means you accept the revised policy.

ONLYHUMN LLC · [email protected] · 1007 N Orange St. 4th Floor, Suite #5984, Wilmington, Delaware 19801, United States