Period Tracker Ovulation App is a free iPhone app designed to help women track their menstrual cycle, ovulation period, and fertility calendar with ease. The app offers a monthly-personalized calendar, accurate forecasts about the next ovulation period, and a history of periods in the previous months. It also allows women to track their premenstrual syndrome symptoms, daily mood, and schedule reminders for their next period, ovulation cycle, and fertility period.

One of the unique features of the app is its Health-Kit Permission, which gives it access to the user's health kit to get steps count, allowing for daily analytics of the user. Additionally, the app provides interesting information and posts to help women understand and take care of their bodies.

Overall, Period Tracker Ovulation App is a comprehensive app that helps women stay informed about their menstrual cycle and fertility period. The app is available for free with a 3-day trial, after which users can choose to pay $9.99 per month or $49.99 per year for unlimited access.