Privacy Policy

Last updated: May 2026

NidNoi ("we", "our", or "the app") is a Thai language learning app. This policy explains what information the app uses and how it is handled.

Summary

NidNoi is designed to work without an account. Your learning progress is stored locally on your device. We do not operate a backend that collects your personal data, and we do not sell your information.

Information stored on your device

The app may store the following on your device only:

• Words you mark as learned and lessons or grammar units completed
• Quiz scores, streaks, and milestone progress
• Settings such as reading mode (hide romanization)
• Which alphabet characters you have viewed

This data is saved using your device's local storage (SharedPreferences on iOS/Android). It is not transmitted to our servers.

Text-to-speech

When you tap listen on a word or example, the app uses your device's built-in text-to-speech engine. Audio is processed on your device; we do not receive recordings or transcripts.

What we do not collect

• No account registration or email required to use the app
• No advertising identifiers or third-party analytics in the app
• No sale of personal data

App Store purchases

If you make in-app purchases in the future, payment is handled by Apple or Google. We receive only the information those platforms provide to developers (such as purchase status), not your full payment details.

Children

NidNoi is suitable for general audiences. We do not knowingly collect personal information from children through our own services.

Changes

We may update this policy from time to time. The "Last updated" date at the top will change when we do. Continued use of the app after changes means you accept the updated policy.

Contact

Questions about privacy? Email hello@zlu.me or visit our support page.