One Night Cardless allows you to play One Night Werewolf true to the original rules, with a shorter, simpler night.

Enter people's names, select your roles, then pass the phone around. The app keeps track of when things happen, and then displays a countdown timer. At the end of the timer, it displays the ending roles people have, and the unused roles at the bottom.

The game stays true to the original order, regardless of the order the roles end up in.
If you select the Doppelganger or Insomniac the phone will need to be passed around twice. Otherwise, it will only need to be passed around once.

The app allows for as many repeats of all roles except Doppelganger, Robber, Troublemaker, and Drunk, which means that more combinations are possible than the original game.