Privacy policy

This policy explains what data the Psygeon iPhone app collects and how it is used. Psygeon is made by Mateusz Sliwa, an independent developer based in Poland, who is responsible for this data. Questions go to sliwa.mateo@gmail.com.

In short: you don't need an account, your learning progress stays on your phone, and we collect a small amount of anonymous usage data to learn which lessons work. We don't show ads, we don't track you across other apps or websites, and we don't sell data.

Data stored only on your device

The app saves your progress, streak, XP, settings and your answers from the introduction on your iPhone. This data does not leave the device. Deleting the app deletes it.

Anonymous usage analytics

We use PostHog to count how the app is used. The data is stored on PostHog's servers in the European Union. The app sends events such as:

• the app was opened;
• an introduction step was viewed or answered, with the option you picked (for example your reason for learning, daily time and starting topic);
• a lesson was started or completed, with the number of correct and wrong answers and the XP earned;
• the subscription screen was viewed, a plan was selected, or a purchase or restore was started, completed, cancelled or failed.

Each event is linked to a random identifier that the app creates on your device. PostHog also receives basic technical details, such as app version, iOS version, device model and language, and, as with any internet request, your IP address. We don't send your name, email address, contacts, location or anything you type. We don't create user profiles and we don't record your screen.

We use this data only to understand which lessons and screens work and to fix problems. The legal basis is our legitimate interest in improving the app.

Subscriptions

Psygeon Pro is sold through Apple. Apple handles the payment, and we never see your payment details or Apple ID. To check whether your subscription is active, the app uses RevenueCat. RevenueCat receives an anonymous app user ID, your purchase history for this app from Apple, and basic device details. The legal basis is the performance of your purchase contract.

Children

Psygeon is meant for university students and adults. It is not directed at children under 13, and we don't knowingly collect data from them.

How long we keep data

Analytics events are kept for up to 2 years and then deleted. RevenueCat keeps purchase records as long as needed to provide your subscription and meet accounting rules.

Your rights

You can ask us to access or delete the analytics data linked to your device, or object to its use. Because we don't know who you are, include the details that help us find it, such as the approximate time you used the app. If you live in the EU or UK, you can also complain to your data protection authority. In Poland this is the President of the Personal Data Protection Office (UODO).

To stop all data collection, delete the app.

Changes

If we change this policy, we will update the date at the top of this page. If a change affects what data we collect, we will mention it in the app's release notes.