What's the best Pomodoro app you've actually stuck with?

Not the one you downloaded, loved for four days, and abandoned. The one you still open.

I've been building a Pomodoro timer, which mostly means I've spent months using everyone else's, and my honest conclusion is that they're

all roughly the same 25-minute countdown and the differences are somewhere else entirely - the sound it makes, whether it nags you,

whether it makes you feel bad on a slow day.

So I'm curious:

• What do you use, and how long have you lasted with it?

• What's the one feature you'd genuinely miss?

• What made you quit the last one?