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Natural Cycles app

An app using basal body temperature measurements to identify fertile days of your cycle.

Natural Cycles	By NaturalCycles Nordic AB
	Features Diary/Tracking (temperature and menstrual cycle) Reminders (notifications from the app around fertile window) Get the app: (external link) (external link) (external link)
Country of origin	Sweden
Clinical review	Read a clinical review of this app.
Security and privacy	Does the app: collect medical information? Yes require a login? Yes have password protection? Yes have a privacy policy? Yes require internet access? Yes Read more safety tips around health apps.
Cost	Annual subscription $89.99 including thermometer. Monthly subscription $9.99/month. Option to purchase thermometer for $14.50.

What does the app do?

Natural Cycles app is marketed as a contraceptive and fertility app, allowing you to use basal body temperature measurements to identify fertile days of your cycle. This information can then be used as birth control (contraceptive) for preventing pregnancy or planning conception. You track your cycle by taking basal body temperature readings ideally 5 or more days per week. The app algorithm uses this information to predict a fertile window for contraceptive or pregnancy planning purposes.

For the complete app description, go to the app website(external link), Google Play(external link), App Store(external link) or, for a more detailed review, see Reviews.

Note: The reliability and accuracy of fertility awareness (also known as natural family planning) as a method to plan or prevent pregnancy is highly variable and depends on a number of factors such as being taught the method correctly and understanding how to use the method. Read more about fertility awareness.

PROS	CONS
✔ With regular basal body temperature monitoring, this app should reliably track ovulation. ✔ Very functional app, easy to navigate.	✘ This app seems rather costly for the services offered. ✘ A specific thermometer is required for basal temperature monitoring. ✘ This app is unlikely to be as reliable when used for contraceptive purposes if you have a very irregular menstrual cycle. ✘ It takes some time for the app algorithm to get to know your cycle, so you are likely to get many ‘red’ (potentially fertile) days initially.

PROS

CONS

✔ With regular basal body temperature monitoring, this app should reliably track ovulation.

✔ Very functional app, easy to navigate.

✘ This app seems rather costly for the services offered.

✘ A specific thermometer is required for basal temperature monitoring.

✘ This app is unlikely to be as reliable when used for contraceptive purposes if you have a very irregular menstrual cycle.

✘ It takes some time for the app algorithm to get to know your cycle, so you are likely to get many ‘red’ (potentially fertile) days initially.

Review details

Date of review: April 2021
Platform reviewed: Android
Version: 4.1.5

Natural Cycles app

What does the app do?

Review details

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