I’ll start.
Two weeks ago I started using Trakt. It’s a website/app designed to keep track of shows and movies you’ve watched, and gives you a list of which episode is available to watch next which updates as new episodes are released.
A lot of other similar websites I tried don’t have everything cataloged (some done have anime, while sites like Letterboxd only do movies).
Recommendations function is pretty horrible though and they lock basic filtering functionality behind a subscription, but it’s still pretty good for what I need it for.
It also gives you stats for your total watch time. Which is now 192 days… Not including reruns… So maybe it’s double that. I don’t know whether to be disappointed in myself or proud.
wger. A workout tracking app that is open source. It tracks workouts, rest times, bodyweight, nutrition, and a lot more. Also has the advantage of being able to selfhost the software incase you don’t trust them with your data (which I do trust, they’re nice devs)