Do commitment devices like this actually work for anybody? I've never known anyone who struggled with procrastination or any other vices that prevent them from

Do commitment devices like this actually work for anybody? I've never known anyone who struggled with procrastination or any other vices that prevent them from getting work done and had their problems solved by a tool like this. The pomodoro technique seems like it would be more effective for motivating you to work since it immediately rewards your efforts with a short break from your tasks.