Introduction
Natural Cycles is a hormone-free fertility tracking app that helps women understand their menstrual cycle and determine fertile days. Using a science-backed algorithm and basal body temperature readings, it provides an alternative to traditional contraceptive methods. But how effective is it? In this guide, we’ll analyze its features, effectiveness, pros, and cons to help you decide if Natural Cycles is the right choice for you.
What is Natural Cycles?
Natural Cycles is the first FDA-approved birth control app that uses temperature-based fertility tracking. By recording daily basal body temperature, the app predicts ovulation, helping users either prevent or plan pregnancy naturally. Unlike hormonal contraceptives, Natural Cycles does not interfere with the body’s natural processes, making it a preferred choice for those looking for a non-invasive solution.

Effectiveness
Effectiveness is a crucial factor when considering Natural Cycles as a birth control method. Studies show that when used correctly:
- Perfect use: 98% effective
- Typical use: 93% effective
This makes it comparable to other contraceptive methods like birth control pills. However, for best results, users must measure their temperature consistently every morning and follow the app’s recommendations carefully.
Technology & Features
Natural Cycles incorporates advanced technology to improve accuracy and user experience:
- Smart algorithm that adapts to individual cycle variations.
- Integration with wearable devices (e.g., Apple Watch) for seamless tracking.
- Personalized fertility insights based on real-time data.
- Automatic temperature trend analysis to detect ovulation with precision.


Ease of Use
Natural Cycles is designed to be user-friendly:
- Simple temperature tracking with guided instructions.
- Clear fertility status indicators (green = not fertile, red = fertile).
- Customizable reminders to improve tracking consistency.
Scientific Backing & FDA Approval
The app is supported by multiple clinical studies and was officially FDA-approved in 2018 as a contraceptive method. The approval was based on extensive research proving its efficacy in tracking ovulation and preventing pregnancy.
Cost & Subscription Plans
Natural Cycles offers flexible pricing:
- Monthly Plan: $14.99/month
- Annual Plan: $99/year (includes a basal thermometer)
Compared to traditional birth control methods, it is a cost-effective alternative for those seeking a natural approach.
Pros and Cons
Pros:
✔️ Hormone-free contraception ✔️ FDA-approved and backed by science ✔️ Can be used for both pregnancy planning and prevention ✔️ No side effects ✔️ Easy to use with personalized insights
Cons:
❌ Requires daily temperature tracking ❌ Less effective for women with irregular cycles ❌ Not a protection against STIs
- Pros and cons table for quick comparison
User Reviews & Testimonials
Many users praise Natural Cycles for its accuracy and ease of use. Some common feedback includes:
- “A great alternative to hormonal birth control!”
- “Helped me conceive after months of trying.”
- “Requires discipline, but worth it for natural family planning.”
Who is it Best For?
Natural Cycles is ideal for:
- Women looking for a hormone-free birth control option
- Those wanting to track their cycle with scientific accuracy
- Couples trying to conceive naturally
Alternatives
If Natural Cycles doesn’t fit your needs, here are some alternatives:
- Clue – A cycle-tracking app without temperature tracking
- Flo – A menstrual health app with AI-driven predictions
- Tempdrop – A wearable basal thermometer that syncs with apps
Privacy & Data Security
Natural Cycles prioritizes user data protection:
- End-to-end encryption for temperature and health data
- Strict privacy policies to prevent third-party access
How to Get Started
- Sign up for a subscription (monthly or annual).
- Receive your basal thermometer (included with the annual plan).
- Start tracking your temperature daily upon waking.
- Follow app recommendations for fertility status.
Where to Add Images:
- Step-by-step guide on setting up the app
Conclusion
Natural Cycles provides a science-backed, hormone-free approach to fertility tracking. With FDA approval and strong effectiveness rates, it’s a great choice for women who want to prevent pregnancy or conceive naturally. However, consistency in temperature tracking is key to its success. If you’re looking for a natural, data-driven alternative to birth control, Natural Cycles is definitely worth considering.