Aside from booking sessions, the functionality of HOTWORX is null. You can’t book sessions while in a session, you can navigate while in a session or an afterburn, you can’t see your sessions without logging in which takes 4 steps and you still have to choose a location even if you just want to see your upcoming sessions, the calories rarely record, the connection to the Fitbit or Apple Watch literally takes almost 20% of a 15 minute session. Navigating HOTWORX is cumbersome. There aren’t any easy ways to get to the simple info that you need or to book. If you want to book a last minute session while you’re there, you have to get in HOTWORX , go to the your sessions, then cancel a session, press yes to confirm, then go back to book a session, find your location, choose the option by time or session, and then book and by then the session has likely started. It’s a really horrible horrible app.