iPhone users who use Fitbit?

Hey everyone, I’m just wondering who has an iPhone but uses Fitbit. When I had a Fitbit I lost 30 pounds using Fitbit tracking calories and burning more calories than I consumes. Fit it’s app layout is genius. So a year ago I got an iPhone and I love it. I decided to try out the Apple Watch which i also love. But I do not like it’s “health” Apps. There is nothing that compares to the Fitbit app. I bought the Fitbit versa 2 tonight. Because I have gained everyone one of those 30 pounds back not tracking my calories and not having the functionality of the Fitbit app. Does anyone else use iPhone but prefer Fitbit over Apple Watch?