Account details:

• email, name, password (when registering via email);

• Google profile data (when logging in via Google);

• profile photo (at the user's request).

Product data:

• links to products, names, prices, images;

• price change history and product status (active / purchased).

Statistics and usage:

• number of discounts found, savings, purchased products;

• feature usage data (via Firebase Analytics).

Subscriptions:

• information about the tariff plan (Free, Light, Maximum);

• subscription status, expiration date, payment provider (Apple);

• StoreKit transaction identifiers for subscription verification.

Notifications:

• device push token (FCM) for sending price drop notifications.

Technical data:

- device type, app version, interface language;

- error and stability data (Firebase Crashlytics / Analytics).