RSS is awesome. My favorite fun fact is that podcasts are RSS-based, which is why you can listen to any of them from any podcast app.

Thank you for sharing your journey! It’s very interesting and informative to see how others have brought more privacy into their lives. I noticed that you were using something from Simple Mobile Tools. I know you said you were going to replace it eventually, but you should soon, especially if you got it from the Playstore, rather than from F-Droid, because they were acquired.

Techlore did a video on fitness tracking a couple years ago. I don’t know if it’s still up to date, but it’s a place to start your search.