There is still the non offical port from @chrmhoffmann. I’m not sure when and if FP will publish 4.4.4 for the FP1. Read closely, I learned that the hard way here.
The rom and the HOWTO are still around if you want to give it a try.
This is how I run my FP1. But I don’t use a fitness tracker. Social pressure from my team works well for me, I don’t need a smart phone for that 