privacy policy.
How the apps handle data: the Small Brockhaus & Efron for iOS; Dahl's Explanatory Dictionary for iOS; Mikhelson's Dictionary for iOS.
You can add dictionary articles to a list of favourites. The list is tied to your iCloud account and stored on Apple Inc's servers, provided you have enabled this feature in iOS settings.
To fix bugs and shortcomings in the apps, when something goes wrong (an abnormal termination, a crash) the app automatically sends a technical report about the error and the events leading up to it to Google Firebase. The report may include the following kinds of data: device type, operating system version, app version, error type, the list of system and library calls the app made before the error, the app installation identifier, and the Firebase Installation ID. These reports contain no personal data.