Privacy Policy

1. Who operates Nindo

RapidGoat LLC, based in Morocco, operates Nindo. For privacy questions and requests, contact contact@rapidgoat.com.

2. Information Nindo processes

• Account information: Nindo uses Sign in with Apple. Apple provides an identity token and account identifier. Depending on what you share through Apple, we may receive your name and email address, including an Apple private relay address.
• Learning content: words and phrases you look up, saved definitions, lists, imported article URLs and text, YouTube video references and transcripts, and content you choose for learning features.
• Learning activity: review ratings, activity and streak data, feature usage counts, and the language preference saved with your account.
• Purchases: plan and subscription status, product identifier, expiration information, and related purchase events needed to provide paid features. Apple handles the payment transaction; Nindo does not receive your full card number from Apple.
• Support: the information you include when you email us, including your contact details and the contents of your request.

Some preferences are also stored on your device, such as the interface language, flashcard settings, and local notification settings. Nindo schedules learning reminders locally when you enable them. Connecting to Nindo or third-party services may also expose technical information such as your IP address to those services.

3. How we use information

We use this information to authenticate your account, provide learning features, save and sync your progress, generate requested explanations and audio, enforce free-plan limits, verify Premium access, send local reminders you choose, protect the service, and respond to support or deletion requests.

Definitions and translations may be cached so that a later request for the same term can reuse an existing result. Do not enter confidential or sensitive personal information in dictionary queries or imported material.

4. Services that receive information

• Apple: provides Sign in with Apple, App Store purchases, and subscription management.
• Supabase: provides account authentication, database storage, and server functions for Nindo’s learning and subscription features.
• Superwall: provides paywalls and subscription information. Nindo identifies your account to Superwall using a user ID rather than your account email.
• OpenRouter and model providers: process requests for AI definitions, translations, video examples, and speech. A request may include a word or phrase, its definition or context, a target language, or text to be spoken. Some video-example requests use web search through OpenRouter.
• YouTube and the sites you import: a video player or transcript request connects to YouTube, and importing an article requires fetching the URL you provide from its publisher.

These services operate internationally, so your information may be processed outside Morocco — including by the managed cloud infrastructure that hosts Nindo’s database and server functions, and by whichever model provider OpenRouter routes a request to. Each provider handles that information under its own privacy policy and our agreement with it. We do not sell your information, and we do not share it for advertising.

5. Storage, retention, and security

Account-linked learning data is stored in Nindo’s Supabase database. Some settings and notification data remain on your device. We use account-based access restrictions and other safeguards to protect stored information, but no system can guarantee absolute security.

Account-linked information generally remains while your account is active. When you ask us to delete your account, we remove it and the learning data linked to it from our active systems within 30 days. Copies can persist in routine encrypted backups for up to a further 30 days, after which those backups are overwritten. Support emails are kept for up to 24 months so we can follow up on earlier requests. We may need to retain limited information for longer when the law requires it or to resolve a transaction or dispute.

6. Your choices and requests

You can change the app language and reminder preferences in the app. You can remove individual saved items using the app’s controls. To request access, correction, or deletion of your account information, email contact@rapidgoat.com. We may ask for information to verify that the request concerns your account. Additional rights may apply where you live.

If you request account deletion, also cancel any active App Store subscription in your Apple subscription settings if you do not want it to renew. Deleting a Nindo account does not cancel Apple billing.

7. Children

Nindo is intended for people aged 13 and older. People under 13 should not create an account or use the app.

If you believe a child under 13 has provided information to Nindo, please contact us at the address below so we can investigate and take appropriate steps to delete it.

8. Website technologies

The Nindo website does not run an analytics script and does not set optional tracking cookies in its page code. It is served as static files, and its hosting provider processes the standard connection information needed to deliver and secure the site — such as your IP address, the time of the request, and your browser’s user agent. Those logs are kept for a short period for security and troubleshooting, and are not used to build a profile of you.

9. Changes to this notice

We may update this notice as Nindo changes. When we do, we post the updated version on this page and change the effective date at the top. If our practices change materially, we will provide any additional notice required by law.

10. Contact

Privacy questions and account-deletion requests: contact@rapidgoat.com.