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Natural Cycles Review: A Smarter, Hormone-Free Birth Control Option?
In a world where many are seeking alternatives to traditional hormonal contraceptives, Natural Cycles has quickly become a buzzworthy name. Marketed as the first FDA-cleared birth control app, Natural Cycles uses science and technology to track fertility naturally—without hormones, implants, or pills. But how effective is it? And more importantly, is it right for you?
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In this review, we’ll explore everything you need to know about Natural Cycles: how it works, effectiveness, costs, benefits, drawbacks, and whether it truly lives up to the hype.
What is Natural Cycles?
Natural Cycles is a fertility awareness-based birth control app that uses an algorithm to track your cycle and predict your fertile and non-fertile days. It’s FDA-cleared in the U.S. and CE-marked in Europe, meaning it's recognized for its safety and effectiveness.
It was developed by physicist Dr. Elina Berglund, who wanted a non-hormonal contraceptive method backed by science. Unlike period-tracking apps, Natural Cycles is specifically designed for birth control or planning pregnancy.
How Does It Work?
Natural Cycles uses your daily basal body temperature (BBT) and optional LH test inputs (luteinizing hormone, measured via ovulation tests) to determine your fertility status.
Here's a quick breakdown:
Measure your temperature every morning using a basal thermometer or wearable device like Oura Ring.
Input your data into the app.
The app uses an algorithm to determine if it’s a “red day” (fertile) or a “green day” (non-fertile).
Green Days: No protection needed
Red Days: Use protection or abstain from sex
The app adjusts as it learns your unique cycle, becoming more accurate over time.
Effectiveness: Is It Reliable?
Natural Cycles has been clinically tested and boasts:
93% typical use effectiveness
98% perfect use effectiveness
This means it's comparable to other non-hormonal options like condoms and copper IUDs. However, success depends heavily on consistency and accuracy in temperature tracking.
Keep in mind:
Missing daily temperature readings reduces accuracy
Lifestyle factors (sleep, alcohol, illness) can impact readings
Backup protection is essential on red days
Pricing: Is It Worth It?
Natural Cycles isn’t free, but it’s fairly affordable compared to long-term birth control methods.
Subscription plans:
Annual plan: ~$90/year (includes thermometer)
Monthly plan: ~$10/month (no thermometer included)
If using the Oura Ring, Natural Cycles offers a wearable integration plan that adjusts accordingly.
Pros & Cons
Pros:
Hormone-free and non-invasive
FDA-cleared and backed by clinical studies
Easy to use with real-time insights
Also works for planning pregnancy
Integrates with Oura Ring and Apple Health
Cons:
Requires daily consistency
Not ideal for people with irregular cycles
Doesn’t protect against STIs
Can be less effective with human error
Not recommended for teens or those seeking 100% effectiveness
Who Is Natural Cycles For?
Natural Cycles is ideal for:
Women seeking hormone-free contraception
Couples practicing fertility awareness methods
Women with regular cycles
Tech-savvy individuals open to daily tracking
People also trying to conceive (app has dual mode)
Safety and Privacy
Natural Cycles complies with data privacy regulations (GDPR, HIPAA), ensuring your information is secure. Plus, being FDA-cleared means it’s been reviewed for safety, labeling, and marketing claims—unlike generic period-tracking apps.
FAQ – Natural Cycles
Q1: Is Natural Cycles safe and effective for birth control?
Yes. It’s FDA-cleared and up to 93% effective with typical use, similar to other non-hormonal methods.
Q2: Can I use Natural Cycles with irregular periods?
It's best suited for people with regular cycles. Those with irregular periods may experience more red days or inaccurate readings.
Q3: What if I forget to take my temperature?
Occasional misses are okay, but frequent missed data reduces accuracy. Using an Oura Ring can help automate tracking.
Q4: Is it suitable for teens or first-time contraceptive users?
It’s not recommended for teens or anyone needing foolproof protection, since user error affects success.
Q5: Does it help with fertility planning too?
Yes! Natural Cycles has a “Plan Pregnancy” mode for couples trying to conceive, making it a versatile app.
