Hourglass: Because time is a resource!
Hourglass is the perfect application for managing thinking times during board games.
Simply set the time limit players are allowed (all rounds combined).
Add players to this game
Whenever a player's turn begins, click on that player and their time will run inexorably until their turn ends.
If during the game an hourglass reaches 0... then this player will have lost for lack of time.
You can use the same game on several devices, it will then be synchronized and you can switch from one hourglass to another on different devices.