Privacy

Last updated: 11 November 2026. Yuz is run by Kamin Farhang Aghyari, Belgium. Questions: [email protected].

Yuz is a free app for learning spoken Persian. We collect as little as we can, never sell your data, show no ads and use no tracking or analytics tools.

If you use Yuz without an account

Your progress, settings and reminder time are saved only in your browser on this device. Nothing is sent to us. Clearing your browser data removes it.

If you create an account

• Sign-in: your email address and password, or your Google account, are handled by Firebase Authentication (Google). We never see your password.
• Progress: your lessons, XP, streak and settings are stored in Google Cloud Firestore so they follow you to other devices. Only you can read them.
• Profile: the name, avatar, banner and "about" line you choose, plus your streak and XP. Only your friends can see it.
• Friends: your friend code, friend requests and friendships.
• Leagues: each week, other learners in your league group see your name, avatar and XP for that week. You can leave the leagues at any time from the league page.
• Problem reports: if you report a problem with an exercise, we receive the exercise, your answer and any note you add.

Your email address is never shown to other learners.

Microphone and notifications

• Speaking exercises: only when you tap the microphone, your browser listens and turns your speech into text. In Chrome and Edge this uses the browser maker's speech service. Yuz does not record or store your voice.
• Reminders: daily reminders are created on your device. No reminder data is sent to us.

Yuz Plus and the AI speaking partner

Yuz Plus is not available yet. When it launches, payments will be handled by a payment provider (we will never see your card details), and messages you write to the AI speaking partner will be sent to an AI provider to generate replies. This page will be updated before that happens.

Who processes data for us

• Google (Firebase Authentication and Cloud Firestore) stores accounts and progress.
• Our website host serves the app's files.

Your choices and rights

• Delete everything: Me → Delete my account removes your account, progress, profile, friendships and league entries.
• You can also ask us for a copy of your data, or to correct or delete it, at [email protected].
• If you live in the EU or UK, you have the rights given by the GDPR, including complaining to a data protection authority. In Belgium that is the Data Protection Authority (GBA/APD).

Children

Yuz accounts are meant for people aged 13 and over (16 in some countries). Younger learners can use Yuz without an account.

Changes

If we change how we handle data, we will update this page and the date at the top.