This has been my experience. Fitbod is a good example of solid product-market fit (for me at least) without followup execution. After the first use I was sold

This has been my experience. Fitbod is a good example of solid product-market fit (for me at least) without followup execution. After the first use I was sold and paid for the annual subscription. But it's so buggy (especially when paired with an Apple Watch) that I've nearly stopped using it. When I first started, I used the app DESPITE the bugs. Eventually the bugs got too painful to deal with. Now I do What Feels Right when I work out. Probably a worse strategy, but I prefer it over fighting through the bugs. (I keep the subscription in hopes that they will improve their app.)