# ovolution — die NFP Zyklus-App > Natural Family Planning cycle tracker for ovulation and fertility awareness. (iPhone/iPad app by ovolution GmbH.) - Source: https://appshunter.io/ios/app/ovolution/id1633014678 (this page in markdown: same URL + `.md`) - Developer: [ovolution GmbH](https://appshunter.io/developer/1633014680) - Category: Health & Fitness, Medical - Price: Free with in-app purchases - Rating: 3.00/5 from 1 App Store ratings - Age rating: 17+ - Requires: iOS 15.6 · 117 MB - Languages: English, Finnish, German, Lithuanian, Swedish - Released: 2025-02-28 - Data updated: 2026-06-26 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/ovolution/id1633014678/reviews.md ## What is ovolution? Your cycle app for NFP: Determine your ovulation and fertile days based on your waking temperature and a second body sign: cervical mucus or the cervix. The ovolution cycle app helps you to apply and understand the rules of NFP (Natural Family Planning). Get to know your cycle, find out more about the different cycle phases and when your next period is due. THE FERTILITY AND PREGNANCY MODE + Display of highly fertile days before ovulation + Calculation of the estimated due date + Display the weeks of pregnancy and the estimated due date + Monitor your pregnancy symptoms ALL FEATURES OF THE OVOLUTION APP: + Evaluation according to NFP rules + Digital NFP cycle sheet + Export function of your cycles as PDF incl. disturbances and notes + Documentation of numerous body signs (temperature, cervical mucus, cervix, LH tests, sex & libido, mood, digestion & hunger and much more) + clear calendar with display of cycle phases & forecast of the next 3 periods + information about your cycle phases + Cycle statistics (cycle length, period duration, earliest 1st higher measurement, length of your luteal phase and much more) + Overview of all your cycles entered so far + many articles and short videos on NFP, the natural cycle, other body signs and much more THE OVOLUTION APP ACCOMPANIES YOU IN EVERY PHASE OF LIFE. By installing and using the cycle app, you agree to the terms and conditions (https://ovolution.rocks/agb) of ovolution GmbH. Note: The ovolution app is a CE-compliant Class I medical device. The ovolution app is not a contraceptive app and must not be used for contraception. ## Key features - NFP rule evaluation - Digital NFP cycle sheet - Body sign documentation - Cycle phase display and forecast - Fertility and pregnancy mode - Cycle statistics and overview - NFP educational articles and videos ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Yearly subscription | $19.99 | per year | | Monthly subscription | $1.99 | per month | | Yearly subscription | $19.99 | per year | | Monthly Subscription | $1.99 | per month | ## Frequently asked questions about ovolution ### What is ovolution? ovolution is a CE-compliant Class I medical device designed to help users track their natural menstrual cycle using the Natural Family Planning (NFP) method. It analyzes body signs to determine ovulation and fertile days. ### How accurate is ovolution? The app evaluates cycles according to NFP rules, which is a method for fertility awareness. Accuracy depends on consistent and correct documentation of body signs like waking temperature and cervical mucus. ### Can ovolution be used for contraception? No, ovolution is not a contraceptive app and must not be used for contraception. It is designed for fertility awareness and understanding your cycle. ### What body signs can I track with ovolution? You can document numerous body signs including temperature, cervical mucus, cervix, LH tests, sex and libido, mood, digestion, hunger, and more. ### Does ovolution have ads? Yes, ovolution contains advertisements. As a free app with in-app purchases, it utilizes ads to support its services. ### What are the subscription options for ovolution? ovolution offers monthly subscriptions for $1.99 and yearly subscriptions for $19.99, providing access to premium features and content. ### What devices does ovolution support? ovolution is available on iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users. ### How often is ovolution updated? The latest version of ovolution is 1.1.13, and it was last updated on May 25, 2026. Updates typically include bug fixes and feature enhancements. ## Version history (last 5 releases) ### 1.1.13 — 2026-05-25 The time is now synchronised correctly with the Bluetooth thermometer. Minor improvements to the user interface. ### 1.1.12 — 2026-05-15 Bug fix for importing Bluetooth data. Previously, if data had already been entered for the day to be imported, it was incorrectly overwritten. This issue has now been resolved, and existing data is being updated. ### 1.1.11 — 2026-05-12 Support for Bluetooth thermometers (beta) Data import for myNFP and ReadMyBody data Better support for large displays. ### 1.1.8 — 2026-02-10 Minor technical fixes. Thank you for your feedback. ### 1.1.7 — 2026-01-28 Technical errors have been fixed in this version. 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