Free rolling is the virtual dice table: put as many dice on it as you like and roll at any time with a tap.
Use the dice picker to place dice on the table: the classic numbered die (D6), a colored die, a letter die, or your own dice from the dice designer. Every die can be removed from the table individually again.
Tap the Roll button to re-roll all unlocked dice – or simply shake your phone, which triggers a roll as well.
Individual dice can be locked so they stay put on the next roll, or turned face-down if you don't want to show the result (yet).
Every action on the table can be reverted or restored with undo/redo – handy if you make a mistake or trigger a roll by accident.