Pomodoro is 25 on, 5 off. Flowtime is whenever, however. Both work. Neither is universally right. Pomodoro is good when the task is dreaded, when you need an external structure to start at all, when you're prone to disappearing into distraction, and when stopping is harder than starting. The bell is a release valve.
Flowtime is good when the task is engaging, when interruptions break flow more than they help, when you have long uninterrupted windows, and when forced breaks feel like punishment. The lack of bell is the gift.
If you don't know which you are, start with pomodoro for a week. It's the friendlier learning curve — the structure gives you something to push against. Once you've done a few rounds, try flowtime on a task you actually want to do. You'll feel the difference. Both are inside FocusBlobs. So is long pomodoro (50/10) for deep work, time-boxed (your estimate becomes the bell), and plain stopwatch when you just want a number at the end.
The blob doesn't care which you pick. The blob just wants you to start.
