Clue is an app for monitoring and tracking behaviors during the menstrual cycle. In it, you can record your mood, the days of the month you menstruated, how is your vitality, sleep periods, feelings and much more! With this information, it will give you PMS and fertile window period predictions (not always accurate). So, you can use the app to learn more about your body and try to get pregnant!

For this, you will need to fill in the information about yourself in the app daily. Thus, it will give you the potential day when your ovulation can happen. But as the app's estimates aren't entirely accurate, it's best that you combine using the app with monitoring your basal body temperature and cervical mucus.

Clue Plus is a paid subscription you can subscribe to for more functionality in the Clue app. If you subscribe, you'll receive a monthly review of your cycle by email, plus you'll be able to read articles about menstrual health that aren't available in the free version. Additionally, you can use Clue Conception to increase your chances of getting pregnant and, if you've already conceived, track your pregnancy in Pregnancy mode.