Privacy Policy - Anjuvo
Last updated: June 2026
Anjuvo is based in the Netherlands and builds language learning apps, including Learn Farsi, Learn Dutch, and future Anjuvo apps. This Privacy Policy explains what data our apps collect, why we collect it, how it is processed, and what choices you have.
We design Anjuvo apps to collect only the data needed to provide learning features, sync progress, process subscriptions, improve the apps, and fix bugs.
Contact: hello@anjuvo.com
Anjuvo apps may automatically create an anonymous account for you through Firebase Authentication. No sign-up is required.
You may optionally link your anonymous account to an email address, Apple ID, or Google account to enable cloud sync across devices or restore your account. If you link an account, Firebase Authentication may receive and store your email address and, where provided by Apple or Google, your display name.
When cloud sync, account features, purchases, feedback, or notifications are used, we may store the following data in Google Cloud Firebase under your user ID:
Cloud data is protected by Firebase security rules designed to isolate each user's data from other users.
Some data is stored locally on your device and is not synced unless a feature specifically requires cloud processing. This may include:
Deleting the app may remove locally stored data, depending on your device and platform settings.
Some speaking activities are local only, such as recording yourself and listening back.
For AI speech feedback, the app records a short audio clip on your device when you choose to use the feature. When you submit the recording, the clip is uploaded to our Firebase Cloud Function and sent to OpenAI for speech-to-text transcription and answer checking.
We may send:
The service returns a transcript, transliteration, match score, pass/fail result, and short feedback.
We do not use your recordings to identify you, build a voice profile, or train our own speech model. We do not store submitted audio clips in Firestore as part of your learning profile. Temporary recordings on your device are deleted after submission, cancellation, or when the speaking session ends.
Speaking-check results, such as pass/fail outcome and attempt count, may be logged as analytics events.
Some Anjuvo apps include an AI-powered real-time conversation coach. This feature is opt-in and activates only when you start a coaching session.
During a coaching session, the app sends your spoken or typed input to our Firebase Cloud Functions and to OpenAI for real-time language feedback, correction, and conversation. Each turn may include:
The coach returns spoken or written corrections, feedback, and follow-up prompts.
We do not use coaching sessions to identify you biometrically or build a voice profile. We do not store full coaching session audio in your learning profile. Individual session turns may be temporarily retained by infrastructure providers for security, abuse prevention, or operational purposes before being deleted.
Summary data from coaching sessions — such as topics practised, session duration, and error categories — may be logged as analytics events and stored as part of your learning progress.
You can end a coaching session at any time. Audio recorded during a session is deleted from your device when the session ends.
If you use features that generate lessons from text, prompts, or custom situations, the text you provide may be sent to our Firebase Cloud Functions and to OpenAI to generate lesson material.
The request may include your selected language, level, lesson settings, request identifiers, and the text you entered. You should not enter sensitive personal information into AI-generated lesson prompts.
Generated lesson content may be stored locally on your device and may be subject to rate limits, abuse-prevention checks, or temporary processing logs.
Anjuvo apps use spaced repetition (SRS) and related algorithms to adapt the difficulty and timing of exercises based on your past performance. This personalisation is designed to optimise your learning experience. It does not produce legal effects or similarly significant consequences for you. No decisions are made about you as a person based on this processing.
We use Firebase Analytics to understand how users engage with the app, improve lessons, identify confusing flows, and measure learning outcomes at an aggregate level.
Analytics events are linked to Firebase pseudonymous identifiers, not directly to your name or email address.
Events may include:
We do not intentionally include your name, email address, raw voice recordings, or free-form personal messages in analytics events. Analytics may include technical identifiers generated by Firebase, device and app information, and learning-related event parameters.
Analytics are not used for advertising.
If you send feedback inside the app, we may store the selected issue, rating, lesson or content context, page number, exercise type, elapsed time, and your anonymous user ID. Feedback submissions are retained for a maximum of 24 months after submission, or until no longer needed to investigate the reported issue, whichever comes first.
This helps us identify broken content, confusing exercises, or quality issues. Please do not include sensitive personal information in feedback.
Daily learning reminders may be scheduled locally on your device.
For server-sent notifications or inbox messages, the app may store a Firebase Cloud Messaging token linked to your anonymous user ID. You can disable notifications in the app settings or your device settings.
Firebase and Google Cloud are used for Authentication, Cloud Firestore, Cloud Functions, Firebase Analytics, Crashlytics, Cloud Messaging, App Check, and security-related protections.
Crashlytics collects crash reports and error diagnostics, which may include device model, operating system version, app version, stack traces, and technical state needed to diagnose crashes.
Firebase privacy information: https://firebase.google.com/support/privacy
OpenAI is used for AI speech-to-text, the AI Conversation Coach, and AI lesson generation features. Audio clips, conversation turns, or text prompts are sent to OpenAI only when you use those AI-powered features.
OpenAI privacy information: https://openai.com/policies/privacy-policy/
OpenAI API data controls: https://platform.openai.com/docs/guides/your-data/
RevenueCat manages subscription status and purchase entitlements. It may receive your anonymous app user ID, product identifiers, purchase history, entitlement status, country or region, and technical device and app information.
Payment card details are handled by Apple or Google, not by Anjuvo.
RevenueCat privacy information: https://www.revenuecat.com/privacy
Apple Sign-In and Google Sign-In are used only if you choose to link your account. Your email address and name, where provided, are passed to Firebase Authentication and stored as your account identity.
Where GDPR applies, we process data based on one or more of the following legal bases:
We retain data only as long as needed for the purposes described in this policy.
Anjuvo is based in the Netherlands, but our service providers may process data in other countries. Where required, we rely on appropriate safeguards such as data processing agreements and standard contractual clauses.
If you are in the EEA, UK, or another region with applicable privacy rights, you may have the right to:
To exercise your rights, contact: hello@anjuvo.com
You can also delete cloud data through the app: Settings → Account → Delete Account
Deleting your account removes cloud learning data linked to your Firebase user ID. It does not automatically cancel an active App Store or Google Play subscription. Subscriptions must be managed through the relevant store.
Some provider logs, analytics, crash reports, billing records, or security records may remain for their normal retention periods where legally permitted.
Anjuvo apps are intended for general language learning by users aged 13 and older. The apps do not knowingly collect personal data from children under 13.
Child mode is a display and content preference. It does not by itself change the data collected by the app.
If you believe a child under 13 has used the app and provided personal data, please contact us at hello@anjuvo.com and we will take steps to delete the relevant data.
We use Firebase Authentication, Firebase security rules, App Check, and service-provider security measures to protect app data. No system can be guaranteed completely secure, but we take reasonable technical and organisational steps to protect user data.
We may update this Privacy Policy when the app changes, when providers change, or when legal requirements change. Material changes will be noted by updating the date at the top of this page.
Anjuvo
Prinses Amaliahof 39
2461 VV Ter Aar
The Netherlands
Email: hello@anjuvo.com