I ended up building my own spreadsheet tracker for 531. Give me a while to make a sanitized copy and I can link it out. It’s not fully automated, but it works (for me at least).
E: So I keep this in Google Drive and can't find a way to share it without doxxing myself. If someone can suggest a way I can share it anonly please let me know and I'll do it.
Thank you for the response. I was thinking about an actual app, since I hate working on spreadsheet on my phone, especially while in the gym.
I've been using https://www.fitnotesapp.com/ and the routine feature now for a few years and it's a "it just works" app for me.
Would this work? https://f-droid.org/packages/de.wger.flutter/
Also if you search "workout" on the fdroid store there is a pretty big selection.
I'm having good luck with wger as well. Been using it for about a year.
Thanks for the hint. I have seen wger as well and it seems good. The only issue that I have with it that it only allows for workout routines where the same workout happens at the same weekday. E.g. it is hard to describe a workout with A/B splits in there (like r/Fitness Basic Beginner Routine).
I guess it will work fine though, since I am trying to move away from that workout anyways.
As for the rest in f-droid store ... flexify and massive seem to be fine, but the others seem a bit outdated looking at their latest release dates.
I use Alpha Progression, it's paid, but does what you ask for!