In case anyone here needs this, it's come in handy for my playthrough(s) for sure. I didn't make this, and I am not affiliated with the creator in any way, I just use it a lot and thought it might help some other folks (and also help grow Lemmy).
Thanks! I was using mapgenie.io but you need to pay in order to track more than 100 things at a time.
Seems like this one doesn't have that limitation.