FEB 2022 UPDATE: The menstrual tracker has been pretty useless for the past few months because it won't save my changes. I posted on the forums and received NO help. Old Review: I use Fitbit to help track my sleep, fitness activity and period. For these, it's pretty accurate and useful. I like the community aspect of it, and wish Fitbit would focus a bit more on this for the app. There's a lot more health-focused updates for Fitbit to focus on. I always look forward to new Fitbit features!