One hadith stores data in user's local machine and changes the browser's settings.

One hadith changes browser settings by forcing One hadith's tab to open for each new tab.

The type of data that One hadith uses are the user's location and selected language.

Those data are stored on the user's local machine and they are used to make API calls to https://aladhan.com/prayer-times-api and https://onehadith.org/api/random.

Those data are not collected by the above APIs, they remain only on the user's local machine.