Menstrual tracking app

I am looking to have a professional develop a cross-platform mobile app that serves as a menstrual tracking system. As well as health and well being. I have a clear idea of the design I’d like the app to have and I am open to discussions about making any minor tweaks to ensure it meets the desired functionality. Specifically, I need the app to be able to track data, such as the user’s cycle length, ovulation date, and any relevant topic related to the menstrual cycle. The app should also include some additional activity monitoring so that the user can track their physical activity, diet and sleep patterns. And will offer different yoga meditation and meals for where they are at in there cycle and how they feel. User accounts will be necessary to store this personal information with sensitivity and privacy.