Archived App (Last seen on 3 Jun 2026)
This is an archived listing of the app previously available on the App Store.
This app helps determine fertile and safe days within a menstrual cycle. It requires users to input their cycle length for accurate calculations. The app is designed for intuitive and simple use.
2.3.0
May 21, 2026
Bug fixes and performance improvements
Use the App unlimitedly for 1 year.
Safe Days Calculator determines safe days by analyzing your menstrual cycle length. You need to input your cycle length, which is the number of days from the first day of one period to the day before the next begins. The app then uses this information to calculate fertile and safe periods.
The app states that the efficiency of the natural family planning method it uses is approximately 90%. It also includes a disclaimer advising users to seek a doctor's advice in addition to using the app and before making any medical decisions.
The app is free to download and use. It offers a subscription package for unlimited access to all features. A 7-day free trial is available for the Annual Premium Package.
The app offers an Annual Premium Package for $9.99 per year, which includes unlimited access to all features. A 7-day free trial is provided with this subscription.
Yes, subscriptions can be managed by the user. Auto-renewal can be turned off by going to your Account Settings after purchase. The subscription automatically renews unless turned off at least 24 hours before the end of the current period.
Safe Days Calculator is available on iPhone, iPad, and iPod. It is designed for iOS devices.
The latest version of Safe Days Calculator is 2.0.0, and it was last updated on December 13, 2023. This indicates a relatively recent update frequency.
Safe Days Calculator has an age rating of 17+. This is likely due to the sensitive nature of the medical information it handles.
