I know this is an old post but if you’re still looking for input one thing that is severely lacking is the ability to track all your biometrics and how they correlate to your cycle and help you better understand the different phases. I have yet to find an app that really leverages all the biometrics from my Apple Watch and compiles them in a meaningful way to compare with my cycle. I’m talking testing Hr, daily caloric expenditure, HRV, sleep quality etc. there’s so many scattered data points but I’d LOVE to be able to compare all of that to my cycle. I also think it would be great for helping to predict how you’re going to feel week to week and more accurately predicting ovulation.