Natural Cycles

Birth control without hormones or side effects

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FSA & HSA
Eligible

4.8

40k+ ratings in the App Store

How does it work?

You can only get pregnant 6 days each cycle. The algorithm behind the NC° app uses body temperature to find these days.

The algorithm learns the pattern of your cycle, giving a daily fertility status, so you can prevent pregnancy hormone-free!

What do I need to do?

Measure your temperature

All devices for Natural Cycles

Open the NC° app

Natural Cycles

Confirm daily fertility status

Natural Cycles

How does Natural Cycles compare to other methods?

HORMONAL

HORMONAL

A package of contraceptive pills

93%

Contraceptive Pill

Illustration of NuvaRing

93%

Vaginal Ring

Hormonal IUD

99%

Hormonal IUD

NON-HORMONAL

Natural Cycles

93%

Natural Cycles°

illustration of a male condom

87%

Condom

Copper iud

99%

Copper IUD

NON-HORMONAL

Percentage of typical users who did not get pregnant with the method over 1 year of use. Read more.

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Find out if Natural Cycles works for you

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Common questions

Your journey starts today

You must be over the age of 18. Does not protect against STIs.

FDA Cleared

Natural Cycles is 93% effective with typical use, 98% effective with perfect use. No method of contraception is 100% effective. Natural Cycles does not guarantee that you cannot get pregnant, it only informs you whether and when you can become pregnant based on the information that you enter into the application.