I'm working on something in the 'quantified self' space, so I love seeing projects like this launch.
As someone who has lost > 100 lbs through completely obsessive data tracking, I'd be happy to give you some feedback over the next few weeks. Feel free to reach out via the contact in my profile.
Initial impressions: good job on launching! Next, I'd say that the initial page could be improved by drawing focus to the center in the headline area. Right now, it feels a bit out of balance with both the left and right sides competing for attention. Instead, try using the 5-6 word version of Thryv in big, bold, centered text. Maybe: "Plan your fitness lifestyle in one place. Use Thryv."
Concerning the product itself, I'll have to use it for a bit.