Natural Cycles Fertility App icon
Natural Cycles Fertility App: A Comprehensive Review of Its Tracking Capabilities

by NaturalCycles Nordic AB

This app provides a hormone-free approach to fertility awareness and birth control. Designed to help users track menstrual cycles through basal body temperature measurements, it serves both contraception and conception purposes. Many find its data-driven methodology particularly valuable for understanding reproductive health patterns.

Detailed Review

Natural Cycles stands as one of the first FDA-cleared digital birth control methods, operating through algorithmic analysis of basal body temperature and menstrual cycle data. The application requires users to take their temperature each morning before rising, then input this data alongside other physiological markers. This information generates daily fertility status updates, indicating whether protection is needed for pregnancy prevention or when conception windows occur. Core functionality centers around two primary modes: 'Prevent Pregnancy' and 'Plan Pregnancy.' The prevention mode identifies infertile days where no protection is needed, while the planning mode highlights optimal conception windows. Integration with Oura Ring allows automatic temperature syncing, eliminating manual entry for compatible wearables. Additional features include period predictions, cycle history analysis, and educational resources about reproductive health. The algorithm requires consistent temperature measurements during the first three months to establish reliable patterns, with accuracy improving over time as more data accumulates. In practical use, the app demonstrates particular strength for those transitioning from hormonal contraception or seeking natural family planning methods. Users typically establish a morning routine of temperature measurement before any physical activity. Notifications help maintain consistency, while the clean interface clearly displays fertility status through color-coding (red/green days). Real-world scenarios include couples avoiding hormonal methods due to side effects, individuals preparing for pregnancy, and those monitoring cycle irregularities for medical consultations. User feedback consistently highlights successful pregnancy prevention and achievement. Reviews indicate high satisfaction with the educational component, with many reporting improved understanding of their menstrual cycles. Multiple testimonials describe successful transitions from hormonal birth control, while others credit the app with helping identify underlying health issues through cycle pattern recognition. Some users mention the subscription cost as a consideration, though most describe the investment as justified given the functionality. The application delivers reliable fertility tracking for disciplined users, though effectiveness depends heavily on consistent temperature measurement and correct usage. While the algorithm provides valuable insights, it requires users to abstain or use protection on identified fertile days for contraception purposes. Medical professionals often note that fertility awareness methods work best for those with regular cycles and strong commitment to daily tracking routines. Overall, Natural Cycles offers a scientifically-grounded alternative for reproductive management, though users should understand its methodology requires active participation and isn't suitable for those seeking completely passive contraception.

Key Features

  • FDA-cleared birth control algorithm analyzing basal temperature and cycle data to determine fertility status
  • Dual operating modes for either preventing pregnancy or planning conception with clear daily indicators
  • Oura Ring integration automatically syncs nighttime temperature measurements without manual entry
  • Comprehensive cycle history and analytics helping identify patterns and irregularities over time
  • Educational resources and notifications supporting proper usage and consistent tracking habits
  • Period prediction functionality estimating menstrual cycle timing and fertile windows

Why Users Love It

Hormone-free reproductive management
Detailed cycle insights and education

Perfect for: Individuals seeking natural alternatives to hormonal birth control or detailed fertility tracking for conception planning

Ranking History

Track Natural Cycles Fertility App's performance in Health & Fitness over the last 30 days

Top 5
Top 10
Top 15
Below 15

Current Rank

#41

Best Rank

#41

All-time high

Average Rank

#41

30-day average

User Reviews

Jesi_C
Oct 21, 2025

I’ve been using Natural Cycles for 4 years as birth control, and I cannot recommend it more. NC offers so many resources to learn about your health. The app makes sure you know how to take your temperature in the morning and notifies you to stay on track with adding temperatures and health information. It’s also easy to use. Highly recommended to anyone! Best Non-hormonal Birth Control I’ve been using Natural Cycles for 4 years as birth control, and I cannot recommend it more. NC offers so many resources to learn about your health. The app makes sure you know how to take your temperature in the morning and notifies you to stay on track with adding temperatures and health information. It’s also easy to use. Highly recommended to anyone!

Frances2025
Nov 20, 2025

I have been using NC as birth control for about 3 years now and I love it. I have learned so much about my body. The app is easy to use and effective. I use it in combination with Oura ring. Would highly recommend for a natural alternative to the pill. Very happy with NC I have been using NC as birth control for about 3 years now and I love it. I have learned so much about my body. The app is easy to use and effective. I use it in combination with Oura ring. Would highly recommend for a natural alternative to the pill.

jehh134
Nov 15, 2025

I used the app in the “Plan Pregnancy” mode and it was a lifesaver. It really helped me learn my cycle, know when it was go time, and eventually get pregnant! Definitely recommend if you are planning or trying. Great for TTC I used the app in the “Plan Pregnancy” mode and it was a lifesaver. It really helped me learn my cycle, know when it was go time, and eventually get pregnant! Definitely recommend if you are planning or trying.

MLRSM09
Oct 24, 2025

I’ve been using natural cycles for a couple months since stopping hormonal birth control. It has been so easy and helpful! I love being able to track and notice trends, especially since having a period is a little new too me since being off the pill. Loving it I’ve been using natural cycles for a couple months since stopping hormonal birth control. It has been so easy and helpful! I love being able to track and notice trends, especially since having a period is a little new too me since being off the pill.

DoodleMomT
Nov 14, 2025

I initially started using the app to track my period and fertility window to prevent pregnancy. I’ve been off hormonal birth control since January of 2023 and knew exactly when to avoid unprotected sex. My partner and I recently decided that we were going to let nature take its course and if it happened then it happened. I’m pretty regular with my period so when I was 3 days late the app told me to take a test and what do you know, I’m pregnant. This app has been wonderful for natural family planning and I can’t wait to continue to use it during my pregnancy. NC knew I was pregnant before I did I initially started using the app to track my period and fertility window to prevent pregnancy. I’ve been off hormonal birth control since January of 2023 and knew exactly when to avoid unprotected sex. My partner and I recently decided that we were going to let nature take its course and if it happened then it happened. I’m pretty regular with my period so when I was 3 days late the app told me to take a test and what do you know, I’m pregnant. This app has been wonderful for natural family planning and I can’t wait to continue to use it during my pregnancy.

App Details

Developer

NaturalCycles Nordic AB

Platform

ios

Rating

4.8

Last Updated

11/30/2025