Can you track ovulation using fertility apps?

Bidisha
<a href="https://play.google.com/store/apps/details?id=com.glow.android">Fertility apps</a> can be a convenient way to track ovulation. How do <a href="https://play.google.com/store/apps/details?id=com.glow.android">fertility apps</a> work? Are they accurate in predicting ovulation?