Effective date: 20 June 2026 Last updated: 15 September 2026
This Privacy Policy explains what data the Egzamin PPL mobile application (“the App”) collects, why, and what your rights are. The App is published for Android (Google Play) and iOS (App Store).
A Polish version of this policy is available at /privacy-pl.
The data controller for the App is:
Radosław Łątka Email: radoslaw.latka.dev@gmail.com
The App is an independent, non-commercial project that helps users prepare for the Polish PPL (Private Pilot Licence) theoretical exam administered by the Polish Civil Aviation Authority (ULC).
The App does not collect, store, or transmit:
The App has no user accounts and no login flow — there is no account you create, no login process, and no email address or password you ever provide.
Beyond the anonymous technical and diagnostic data described in section 3, the only information that ever leaves your device is feedback you actively choose to send: a thumbs-up or thumbs-down on an explanation, a problem report about a question, or an email you send us from Settings. Votes and problem reports are anonymous — never linked to your identity. An email, by its nature, comes from your own address, and you decide exactly what it contains. All of this is optional and is described in section 3.
We collect a minimal amount of anonymous technical and diagnostic data to keep the App stable and — if you choose to use these features — your explanation votes and problem reports.
| Data | Purpose | How |
|---|---|---|
| Crash reports (stack trace, exception type, app screen at time of crash) | Detect and fix bugs | Firebase Crashlytics |
| Device model, OS version, app version, system language, available memory | Reproduce crashes on the correct device class | Firebase Crashlytics |
| Firebase Installation ID (a randomly generated UUID per app install) | Group crash reports from the same installation so we can tell whether a bug affects one user or many | Firebase Installations (required by Crashlytics) |
| Install ID (a separate, randomly generated UUID per app install) | Link your optional votes and problem reports to a single installation — so we can count one vote per installation and prevent manipulation of this feedback — without identifying you | Stored locally and sent with each vote or report to Cloud Firestore |
| Your explanation votes (the vote direction, which explanation it relates to — content code, language, and revision — and which screen it was cast from) | A private quality signal that tells us which explanations need improvement | Cloud Firestore (collection “contentVotes”) |
| A problem report you choose to send (the reason you pick, which content it concerns — content code, category, licence, language, and explanation revision — the app version, and an optional note you type) | Find and fix content errors — a wrong answer key, a faulty explanation, or a mistake in a question | Cloud Firestore (collection “problemReports”) |
This data is not linked to your identity. The Firebase Installation ID and the Install ID are separate per-install random identifiers, and neither is connected to your Google account, advertising ID, or any other identifier. Both are reset when you uninstall the App or clear its data.
The App makes anonymous network requests to Cloud Firestore to download exam questions, categories, and explanations; these requests carry no information that identifies you personally. When you vote on an explanation or send a problem report, the App additionally writes that vote or report to Cloud Firestore as described above — what we store includes your Install ID and the vote or report data, but no information that identifies you personally. All Cloud Firestore traffic is protected by Firebase App Check (Play Integrity on Android, DeviceCheck on iOS).
Your votes and problem reports stay private. Only we see them, and only to fix and improve the App’s content; they are never shown to other users.
The optional note in a problem report is free text that you type yourself. Because there is no way for us to reply to a report, please describe only the content problem and do not include any personal data (such as your name or email address). Report notes are never shown to other users.
Sending feedback by email. Settings includes a “Send feedback” option for app bugs and suggestions. It opens your own email app with a message addressed to us, pre-filled with your app version, platform, selected licence, and language so we can understand the context. That email is sent through your own email provider and is not stored in our databases; unlike a problem report, it does come from your email address, because that is how we can reply to you. You see and control everything it contains before you send it.
Where the GDPR applies, the legal basis for processing each of these categories of data is our legitimate interest (Art. 6(1)(f) GDPR):
We have weighed this interest against your privacy. The processing uses only the data it needs, relies on a random per-install identifier rather than anything that identifies you, keeps your votes and reports private, and lets the content you write yourself leave the device only when you choose to vote, send a report, or write to us. We therefore consider that it does not override your interests, rights, or freedoms.
Technical and diagnostic data, explanation votes, and problem reports are processed on our behalf by:
Data may be transferred to and stored on Google servers outside the European Economic Area. Such transfers are governed by Google’s Data Processing Addendum and Standard Contractual Clauses approved by the European Commission.
If you contact us through the “Send feedback” email option, your message is handled by your email provider and ours in the ordinary way, and we use it only to read and respond to what you sent.
Under the GDPR you have the right to:
Because we do not collect any data that identifies you personally, in practice we cannot locate a specific person’s records on request. You can still exercise the most effective form of deletion yourself: uninstall the App (or clear its data in system settings). This deletes the local cache and resets the Firebase Installation ID, after which any remaining diagnostic data ages out within ~90 days.
You can withdraw a vote at any time, right in the App: tap the highlighted thumb again and that vote is deleted from our servers. Problem reports cannot be withdrawn one by one — for your privacy, the App is not allowed to read the reports back — but they are deleted during our periodic cleanups (see section 6), and uninstalling the App breaks the last link between you and any remaining report, as explained next.
Uninstalling the App also resets your local Install ID. Any votes or problem reports you have already sent stay stored, but they are linked only to that random local identifier, which is not kept anywhere else — once it is gone, those votes and problem reports can no longer be traced back to you or your device through that identifier.
If you have questions or wish to exercise a right, email radoslaw.latka.dev@gmail.com.
The App is intended for users preparing for an aviation licence and is not directed at children under 16. We do not knowingly collect data from children.
The App contains no advertising, no third-party trackers, and no analytics SDKs beyond Firebase Crashlytics as described above.
If we change this policy we will update the “Last updated” date above and, where the changes are material, we will note them in the App’s release notes on Google Play and the App Store.
For any privacy-related question:
Radosław Łątka Email: radoslaw.latka.dev@gmail.com