Best Basal Body Temperature Tracker Apps

247+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated September 2026

Finding the right basal body temperature tracker apps can be overwhelming with so many options. We've analyzed 247+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Basal Body Temperature Tracker Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Femometer Fertility TrackerFemometer Fertility TrackerFree4.9★ (70K)NoYesSep 2026
2Body Temperature App For FeverBody Temperature App For FeverFree4.7★ (22K)NoYesSep 2026
3Natural Cycles: Fertility AppNatural Cycles: Fertility AppFree4.8★ (30K)YesYesSep 2026
4Body Temperature TrackerBody Temperature TrackerFree1.0★ (1)NoYesSep 2026
5Kindara: Fertility TrackerKindara: Fertility TrackerFree4.7★ (10K)NoYesSep 2026
6OuraOuraFree4.9★ (291K)NoNoSep 2026
7TempdropTempdropFree4.2★ (705)NoYesAug 2026
8Body Temperature NotepadBody Temperature NotepadFreeYesYesMay 2026

Top Picks for Basal Body Temperature Tracker

Femometer Fertility Tracker#1

Femometer Fertility Tracker by Bongmi Global Group

Ovulation & Period Calendar
Editor's Choice
💪 Health & Fitness
4.9😊(70K ratings)
FreeIn-App Purchases
Femometer Fertility Tracker screenshot 1
Femometer Fertility Tracker screenshot 2
Femometer Fertility Tracker screenshot 3
Femometer Fertility Tracker screenshot 4
Femometer Fertility Tracker screenshot 5
Femometer Fertility Tracker screenshot 6

This app helps women track their menstrual cycles, predict ovulation, and monitor fertility. It records period dates, symptoms, and test results to provide personalized insights and increase conception rates. It also supports users throughout pregnancy with tracking and educational resources.

What We Love

  • 🚀 Reliable and accurate predictions
  • 👍 Customizable and helpful features
  • 💡 Intelligent LH test recognition
  • 👍 Great for tracking cycles and ovulation

Room to Improve

  • 🐛 Syncing and connectivity issues
  • 🔍 Limited fertility factor tracking
  • 💬 Overwhelming community discussions
  • 💰 Paywall for key features
Body Temperature App For Fever#2

Body Temperature App For Fever by AboutMe Apps, Inc.

Thermometer. Checker. Tracker
Strong Contender
🏥 Medical
4.7😞(22K ratings)
FreeIn-App Purchases
#17in Medical
Body Temperature App For Fever screenshot 1
Body Temperature App For Fever screenshot 2
Body Temperature App For Fever screenshot 3
Body Temperature App For Fever screenshot 4
Body Temperature App For Fever screenshot 5
Body Temperature App For Fever screenshot 6

Estimate and track body temperature trends to monitor potential fever symptoms. Log data, export reports for healthcare providers, and monitor family members' temperatures. Includes features like heart rate estimation and symptom tracking.

What We Love

  • ⭐ Accurate temperature readings
  • 📊 Helpful for tracking health symptoms
  • 🔍 Useful when no thermometer is available

Room to Improve

  • 💰 Subscription-based model
  • 🤔 Misleading claims about temperature measurement
  • 🤖 Inaccurate temperature estimates
  • 🔒 Lack of transparency around subscription details
Natural Cycles: Fertility App#3

Natural Cycles: Fertility App by NaturalCycles Nordic AB

Ovulation Tracker・FDA-cleared
Worth Considering
💪 Health & Fitness
4.8😊(30K ratings)
FreeAdsIn-App Purchases
#26in Health & Fitness
Natural Cycles: Fertility App screenshot 1
Natural Cycles: Fertility App screenshot 2
Natural Cycles: Fertility App screenshot 3
Natural Cycles: Fertility App screenshot 4
Natural Cycles: Fertility App screenshot 5
Natural Cycles: Fertility App screenshot 6

This app helps women track their hormonal health and fertility using body temperature data. It offers hormone-free contraception, pregnancy planning, and insights into various cycle stages. It adapts to individual cycles, even irregular ones, providing daily fertility status.

What We Love

  • 👍 Teaches users about their cycle
  • 👍 Helps users understand their body
  • 👍 Provides a natural contraceptive option
  • 👍 Accurate in predicting ovulation and periods
  • 👍 Empowers users to take control of their fertility
  • 👍 Improves mood and reduces side effects compared to hormonal birth control
  • 👍 Useful for both preventing and planning pregnancy
  • 👍 Detailed data and insights about user's cycle

Room to Improve

  • 🐛 Inconsistent in predicting ovulation and periods for some users
  • 🐛 Thermometer issues (loud, hard to read, no Bluetooth connectivity)
  • 🐛 Difficult to use for users with irregular cycles or disrupted sleep schedules
  • 🐛 Lack of customer support responsiveness
  • 🐛 Automatic subscription renewal issues and no refunds
  • 🐛 Algorithm not always accurate, leading to unintended pregnancies
  • 🐛 Cluttered and unintuitive app interface

More Basal Body Temperature Tracker apps to explore

FAQ about Basal Body Temperature Tracker

What are the best basal body temperature tracker apps for iPhone?
Femometer Fertility Tracker tops our basal body temperature tracker apps ranking as of September 2026, with a 4.9-star average from 70K App Store ratings, and it's free to download.
Yes — 20 of the top basal body temperature tracker apps we rank are free to download, including Femometer Fertility Tracker and Body Temperature App For Fever.
Femometer Fertility Tracker has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 247+ basal body temperature tracker apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Femometer is a smart ovulation and fertility tracker designed to help users understand and manage their menstrual cycles. It accurately predicts ovulation and fertile windows, tracks periods, and records various health data to provide insights for conception or general health monitoring.
Key features include period and PMS tracking, ovulation and fertile window prediction, BBT and CM logging, recording of pregnancy test results, personalized fertility insights, conception guidance, and tools to track pregnancy progress.

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