ARCANUM Privacy Policy

Last updated: October 7, 2026 · Українською

This policy explains how the ARCANUM app (“ARCANUM”, “the app”) handles information. ARCANUM is published by Tetiana Lahotska (“we”, “us”).

Summary

• Your readings, questions, notes and journal stay on your device. We never receive them.
• ARCANUM has no account, no advertising, no analytics and no AI service.
• ARCANUM is unlocked with a one-time purchase. To process and verify it, the app store and our purchase provider, RevenueCat, handle purchase information described below.

Information stored only on your device

Readings, questions, notes, favorites, daily-card history, journal insights and study progress are stored in a local database on your device. App preferences (language, reminder time, display options) are stored locally as well. This information is not sent to us or to any server.

Purchases

ARCANUM is a paid app unlocked by a one-time “Lifetime” in-app purchase.

Payment. Payments are handled entirely by Google Play (Android) or the Apple App Store (iOS). We never receive your name, email address or payment card details. The store’s own privacy policy applies to the payment: Google, Apple.

Purchase verification by RevenueCat. The app uses RevenueCat, a service provider that verifies purchases and tells the app whether your lifetime access is active, including after reinstalling or on a new device (“Restore purchases”). For this, RevenueCat processes:

• a random, anonymous app user ID generated by the app (it does not identify you by name or contact details);
• purchase and transaction information from the store, such as the product purchased, purchase date, price and currency, and store transaction or order identifiers;
• technical information about the device and app, such as platform, operating system version, app version, country or storefront, and the IP address used to connect to RevenueCat.

RevenueCat does not receive your readings, questions, notes or journal. The app does not collect or share an advertising identifier. RevenueCat processes this information on our behalf; see the RevenueCat Privacy Policy. We can view the purchase records in our RevenueCat account to provide support and handle refunds.

Free trial. The trial is timed with RevenueCat’s records: on Android from the date RevenueCat first saw the app’s anonymous user ID, on iOS from the date you started the free trial purchase.

Why. This information is used only to provide the trial and the access you paid for, to restore it, and to handle refunds, support and fraud prevention. It is not used for advertising or sold.

Reminders and permissions

If you turn on the daily reminder, the app asks for notification permission where Android requires it. The reminder is scheduled locally by your device. You can turn it off in the app or in your device settings.

Backups you export

When you choose Export backup, ARCANUM writes a JSON file to a location you select. It can include your personal questions, notes, readings and study progress. If you choose a cloud location, that provider handles the file under its own terms. Importing a backup replaces the journal and study progress currently in the app.

Android device backup or device-to-device transfer may copy app data according to the settings and services enabled on your device.

Retention and deletion

• On-device data remains until you delete it in the app, clear the app’s storage, or uninstall the app. We have no copy of it.
• Exported backups remain where you saved them and must be deleted there.
• Purchase records are kept by the app store and by RevenueCat for as long as needed to provide and restore your lifetime access and to meet legal, tax and accounting obligations. You can ask us to delete the RevenueCat record linked to your purchase by writing to the contact below; please include your store order number so we can find it. Deleting it means the purchase may no longer be restorable through the app.

Your rights

Depending on where you live (for example under the GDPR in the EU/EEA or the UK), you may have the right to access, correct, delete or object to the processing of personal information, and to complain to a data protection authority. Purchase information is processed because it is necessary to provide the purchase you requested. To exercise your rights, contact us below.

Children

ARCANUM is a general-audience app for reflection and entertainment. It is not directed at children under 13 and does not knowingly collect personal information from them.

Changes

We will update this policy when the app’s data practices change and change the date above. The current version is always available at this address.

Contact

Tetiana Lahotska · codexxdev77@gmail.com