PromodifyOpen the timer

90/15 Pomodoro Timer

90 minutes of focus, 15 minutes of break. 90/15 is a marathon block — for ultradian deep work, exam prep, and one-sitting projects.

Start a 90/15 session →

Who should use 90/15

90/15 matches your body's ultradian rhythm. Use it for the deepest one or two blocks of your day — architecture, exam-day study, the hardest piece of a project.

How to run it

  1. Pick ONE task and write it down.
  2. Open Promodify and set the focus length to 90 minutes, break to 15.
  3. Start. Phone in another room.
  4. At the bell, stop and take the full 15-minute break.

Other Pomodoro intervals