Privacy Policy

Who we are and what this document covers

The “Deutsch” app helps you learn German from A0 to B2. This policy describes how the app and this web page handle data.

Data controller

Oleksandr Turovskyi, independent developer

Data contact

foodysupport@gmail.com

Application

Deutsch — com.turoff.deutsch (iOS, Android)

Revision

2.2, 2 October 2026

Scope

The app, cloud sync and the deutsch web pages (privacy, support)

We deliberately keep the data footprint minimal: anything not listed below is not collected. If you find a discrepancy between this text and how the app behaves, tell us — we will fix either the text or the code.

What data we process

In guest mode your progress never leaves the device. The only things that do are the AI requests you trigger by hand, pseudonymous analytics and crash reports, course content downloads, and a subscription-status check with RevenueCat under an anonymous identifier.

Legal bases for processing (GDPR Art. 6)

You may object to processing based on legitimate interest — write to us and we will either stop it or explain why it prevails.

AI features: what actually leaves your device

No AI feature runs in the background. Data is sent only during something you started yourself: a pronunciation exercise, a photo, a message.

The processor is the Google Gemini API. The app calls it directly over an encrypted connection; if that route is unavailable, the request goes through Firebase AI Logic instead, where App Check additionally verifies it (Play Integrity on Android, App Attest on iOS). Google's terms: Gemini API Terms.

Please do not type sensitive personal information (identity documents, medical or payment details) into AI features — none of it is needed to learn German.

Device permissions and why they exist

Who we share data with

We do not sell data or pass it to advertisers or brokers. Below is the full list of processors acting on our behalf.

Lesson narration is pre-rendered and shipped as ready-made files, so speech synthesis never receives any of your data. We may also disclose data where the law requires it, or where it is necessary to protect the rights and safety of users.

International data transfers

Our providers are global cloud services, so data may be processed on servers outside your country, including in the European Union and the United States.

For those transfers the providers rely on the European Commission’s Standard Contractual Clauses and/or certification under the EU–U.S. Data Privacy Framework. Details are in each company’s privacy policy, linked in the previous section.

How long we keep data

How we protect data

No system is perfectly secure. If you spot a vulnerability, write to foodysupport@gmail.com — we will reply and fix it. If an incident puts your rights at risk, we will notify you and the supervisory authority within the deadlines set by law.

Deleting your account and data

You can delete everything yourself, with no correspondence and no waiting.

1. Open “Settings” in the appThe section is reachable from your profile.
2. Scroll down and tap “Delete account”The app will ask for confirmation.
3. Confirm the deletionIf a long time has passed since you signed in, you will be asked to sign in again — this prevents someone else deleting your account.
4. DoneEvery cloud document belonging to your account is erased — profile, lessons, review cards, saved words, daily activity, exams, achievements, reading progress and your flashcard sets — along with your profile photo, your leaderboard row and the entire local database on the device. The account itself is deleted too.

Only want to reset progress? “Settings → Reset progress” clears lessons, reviews, achievements and exams while keeping the account.

Using the app as a guest? Your data exists only on the device — just uninstall the app.

Have a subscription? Deleting the account does not cancel it — turn off auto-renewal in your App Store or Google Play settings. To have us erase the records of your purchases at RevenueCat, write to foodysupport@gmail.com.

Cannot access the app? Write to foodysupport@gmail.com from the address the account is registered to, with the subject “Data deletion”. We will complete the request within 30 days at the latest.

Your rights

We give every user the same set of rights, regardless of where they live.

• Access — obtain a copy of the data we hold about you.
• Rectification — correct inaccurate data; most fields are editable right in your profile.
• Erasure — delete your account and all data (see the section above).
• Restriction — temporarily pause processing.
• Objection — object to processing based on legitimate interest, including analytics.
• Portability — receive your data in a machine-readable format.
• Withdraw consent — for example, turn reminders off; this does not affect the lawfulness of earlier processing.
• Complaint — lodge one with the data protection supervisory authority in your country.

To exercise any right, write to foodysupport@gmail.com. We respond within 30 days. To avoid handing your data to someone else, we may ask you to confirm that the message came from the account’s address.

Children

The app is not directed to children under 13, and we do not knowingly collect their personal data. In countries where a higher age applies to consent (up to 16 in some EU member states), the app should be used with the permission of a parent or guardian.

If you are a parent or guardian and believe a child has given us data, write to foodysupport@gmail.com and we will delete the account and all related data.

Advertising, tracking, data sales and payments

We make no automated decisions producing legal effects for you. Exercise scoring and the review schedule are learning mechanics, not profiling.

The app offers an optional auto-renewable subscription, Deutsch Premium. The payment itself is handled entirely by the App Store or Google Play acting as independent controllers: card numbers, billing addresses and any other payment details never reach us. RevenueCat receives the purchase confirmation from the store and tells us only whether the subscription is active, keyed to an account identifier rather than to your e-mail address. None of this involves advertising — the app carries none.

What we declare in the App Store and Google Play

This section matches the App Store “App Privacy” card and the Google Play “Data safety” form.

This page

Your language and theme choices are kept only in your browser’s local storage and are never transmitted. The hosting provider may keep standard access logs (IP address, browser type) for security and abuse protection.

Frequently asked questions

Changes to this policy

We may update this policy, for example when new features ship. The current revision always lives here, with its date and number shown at the top of the page. We will announce material changes in the app.

1. 2.22 October 2026Corrected the order of speech recognition: pronunciation and spoken answers are recognised by the phone’s built-in service (Apple or Google), and a recording goes to Google Gemini only if the phone does not support German, or in the AI dialogue. Clarified when the microphone turns on.
2. 2.12 October 2026Corrections. Added the Deutsch Premium subscription: RevenueCat and the stores joined the processor inventory and a Purchases category joined the store declarations; removed the outdated claim that the app has no in-app purchases. Described the public leaderboard and profile photos. Clarified that AI requests go to the Gemini API directly, with Firebase AI Logic as the fallback route; removed the mention of an AI relay server this app does not use.
3. 2.018 August 2026Full rewrite: added legal bases, retention periods, the permission and processor inventories, and store declarations. Clarified that Supabase only delivers course content and stores no user data, and that AI requests in public builds go directly through Firebase AI Logic.
4. 1.0August 2026First edition of the policy.

Contact

If our answer does not satisfy you, you have the right to lodge a complaint with the data protection supervisory authority where you live.