Users statistics of PDF4Teachers
At each start of the app, and then each hours, PDF4Teachers make a request to a statistics server. If you don't disable it in the settings, the app will send to the server : the number of hours spent on the app, the number of times the app have been started and the app language. These datas are anonymized with a unique id, generated randomly at the app's first start. All these statistics can be seen here, or downloaded in a CSV file at the bottom of the page.