What thermometer can I use?
Read up on the questions we get asked the most.
What thermometer can I use?
How long will it take the app to get to know my cycle?
What can affect my temperature?
How many red days do I get?
I’m on the pill or other birth control, when can I start?
Who is Natural Cycles suitable for?
What about irregular cycles?
What countries do you ship to and when can I expect my thermometer?
Is it effective?
How do I get started?
How does Natural Cycles calculate my red or green days?
Can I use NC for family planning?
Why is Natural Cycles the first CE marked and FDA cleared birth control app?
When and where should I measure my temperature?
What happens if I forget to measure my temperature?
How many green days will I get?
Does Natural Cycles protect against STIs?
What distinguishes Natural Cycles from other fertility apps?
How much does it cost to use Natural Cycles?
What is the ovulation prediction feature?