Using an App for Fertility Awareness
There are some great apps out there for tracking your fertility signs. The most important thing to know is that using an app is NOT the same as learning a method of fertility awareness. The descriptions of all the quality apps note that you will be able to use their app effectively IF you work with a certified NFP instructor. Whether you are trying to conceive or trying to postpone, or address questions about your health, understanding what you are observing and how to interpret the signs is what matters. So take a class in your chosen method first. Then choose an app that would be helpful to you.
The FACTS organization has reviewed many fertility awareness apps and has information about them on their website.