Marbles is a timer app for deep work.
There are different ways to perform deep work. One of the popular methods is the Pomodoro technique, where you do 30-minute time blocks – 25 minutes of focusing on a single task, and 5 minutes of rest to review your progress and prepare for the next time block. You do four of these before a longer break to give your brain a rest.
You can try different intervals; everyone works differently. Some people avoid rest periods altogether during work. I do a loose Pomodoro where I focus on single tasks to completion during a sprint period, and then do casual work and check what my colleagues are up to during a rest period.
Why is it called Marbles? Andy Tryba likes to use marbles – one marble per 30 minutes of work, and the goal is 10 marbles a day.