Snowi ← Back to snowi.site

Privacy policy

Last updated: 3 October 2026 · Applies to the Snowi iOS and Android apps and to snowi.site

Snowi is a language-learning app made by Safe4ai. It is built so that your learning stays yours: your conversations, vocabulary and progress are stored on your device, not on our servers.

1. Who we are

Snowi is operated by Safe4ai ("we", "us"). For any question about this policy or your data, write to info@safe4ai.com.

2. What is stored on your device

• Your conversations, transcripts, vocabulary and progress observations.
• Your preferences: learning language, subtitle language, theme and settings.
• The OpenAI API key you enter, kept in the device's secure storage (iOS Keychain / Android Keystore). It is excluded from learning exports and is sent only to OpenAI.

You can export a JSON backup of your learning data, delete a single conversation, or delete all learning data at any time in the app's Settings. Deleting the app removes these records from the device.

3. What is sent to OpenAI during practice

To hold a spoken conversation, the app sends the following to OpenAI using your own API key:

• your audio while you are speaking,
• the relevant parts of the conversation text and your learning context,
• any web search the conversation asks for.

Snowi does not retain your raw audio. Requests set store: false where the API supports it. OpenAI's own terms, abuse-monitoring rules and your OpenAI project settings still apply, and OpenAI bills your project for the voice, text and search you use. The usage figure shown in the app is an estimate, not an invoice.

4. Optional account (hosted sign-in)

You can practise without an account by using your own OpenAI key. If you choose to sign in (Google today; Apple when available), our server stores only what is needed to keep you signed in:

Record	What it contains	Kept for
Account	A random account ID, your verified email address if the provider supplies one, and the creation time	Until you delete your account
Sign-in identity	The provider name and the provider's stable subject identifier	Until you delete your account
Session	A hash of the session token (never the token itself), creation, expiry and sign-out times	24 hours; at most ten active sessions
Sign-in challenge	A hash of the one-time nonce used to verify the sign-in	5 minutes
Rate-limit counter	A keyed hash of the network identifier, and a counter	About 2 hours

Provider tokens and authorization codes are verified in memory and are not stored. Your conversations, vocabulary and progress are not sent to the account service.

5. Purchases

If paid features are offered, purchases are processed by Apple or Google through the app stores. We receive a purchase record (product, date and entitlement) so the feature can be unlocked, and we never receive your card details. Refunds follow the store's policy.

6. This website and the launch waitlist

• If you join the waitlist, we store the email address you submit, together with the time of submission, in Cloudflare KV. We use it only to tell you when Snowi launches.
• The site is served by Cloudflare, which processes requests and may keep standard security logs (IP address, user agent) to protect the service.
• The pages load their fonts from Google Fonts, which means your browser contacts Google's servers and shares your IP address and browser information with Google.
• The site sets no advertising or analytics cookies of its own.

To be removed from the waitlist, email info@safe4ai.com and we will delete your address.

7. What we do not do

• We do not sell or rent your personal data.
• We do not use advertising SDKs or track you across other apps and websites.
• We do not collect your conversations on our servers.

8. Retention and deletion

Deleting your account from inside the app removes its account, identity, session and wallet records. If a settled payment history exists, we must keep an opaque account reference for accounting, and we will tell you that at the time. Encrypted backups expire on their own schedule, so a deletion may not remove every backup copy immediately.

Step-by-step instructions, including what to do if you can no longer sign in, are on the support page.

9. Your rights

Depending on where you live, you may have the right to access, correct, delete, restrict or object to the processing of your personal data, and to receive a portable copy. You can exercise most of these directly in the app (JSON export, delete data, delete account) or by emailing us. You also have the right to complain to your local data-protection authority.

10. International transfers

Our service providers — OpenAI and Cloudflare — may process data in countries other than yours, including the United States. Where required, transfers rely on the providers' standard contractual clauses and equivalent safeguards.

11. Security

Traffic between the app and our servers uses TLS. Session tokens are stored only as hashes, API keys stay in the device's secure storage, and our server keeps only the records listed above. No system is perfectly secure, so please keep your device passcode and your OpenAI key private.

12. Children

Snowi is not directed to children under 13 (or under 16 in the European Economic Area), and we do not knowingly collect personal data from them. If you believe a child has used the app and provided personal data, contact us and we will delete it.

13. Changes to this policy

If we change how Snowi handles data, we will update this page and change the date above. Material changes will also be noted in the app or by email where appropriate.