It's up to you! If you’re looking for fast and easy sex and health logging, simplified period tracking, cycle trend detection and great content on Sex and Birth Control, Eve is right for you.
If you’d prefer a more comprehensive log for pinpointing your fertile window (i.e. practicing Fertility Awareness Methods or learning about your fertility) and/or tracking other components of your health, such as weight and exercise, Glow may be a better fit.