Have you tried searching for tabata timers? I have used “Tabata Timer and HIIT timer” for iPhone. I don’t recall the names, but I used similar free apps on Android years ago too.

Precisely. Excellent points!

When I ended up at Reddit 16 years ago after Digg, I don’t recall it being a huge community immediately. I think it helped that there weren’t subreddits yet. So, probably seemed like more people. I think it took a couple of years for the transition to hit critical mass.