No. The Web application is available on any internet browser (e.g. Google Chrome, Mozilla Firefox, Opera, Safari).
In order to log in to the Web application, go to:
https://bed-booking.com/en/login/
and enter your username (e-mail address) and password.
If you can't remember your password, go to:
https://bed-booking.com/en/password-recovery/
and follow the instructions provided.