Advanced PDF Password Recovery's main window displays the application menu and toolbar, the encrypted PDf file and the Range tab which you can customize. 

In the Length tab you can select the minimal and the maximal password length for the brute-force attack. 

Advanced PDF Password Recovery Pro's Auto-save tab lets you select the time interval to auto-save your project and the default directory. 

The Options tab enables you to customize the application's behavior according to your needs and preferences. 

In the Advanced tab you can configure the advanced options, including whether to search for a user password or an owner one and the mark symbol.