Best Fatigue Monitoring App

0+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated July 2026

The best fatigue monitoring app on iPhone average 4.5★ across 0+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

Compare top Fatigue Monitoring App (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Stress Monitor for WatchStress Monitor for WatchFree4.5★ (9.1K)NoYesAug 2026
2FITTR: Health & Fitness AppFITTR: Health & Fitness AppFree4.6★ (2.4K)NoYesAug 2026
3Visible: Pacing for illnessVisible: Pacing for illnessFree4.8★ (3.4K)NoNoAug 2026
4iHeart-Pulse Rate Monitor App.iHeart-Pulse Rate Monitor App.Free4.7★ (6.9K)YesYesAug 2026
5iCardiac: Heart Rate & HealthiCardiac: Heart Rate & HealthFree4.7★ (29K)YesYesAug 2026
6StressWatch: AI Stress MonitorStressWatch: AI Stress MonitorFree4.7★ (23K)NoYesAug 2026
7Sleep Monitor: Sleep TrackerSleep Monitor: Sleep TrackerFree4.6★ (5.2K)YesYesAug 2026
8BodyWave: Health TrackerBodyWave: Health TrackerFree4.6★ (20K)NoYesAug 2026

Top Picks for Fatigue Monitoring App

Stress Monitor for Watch#1

Stress Monitor for Watch by ActiveAce

HRV Tracker & Health Insights
Editor's Choice
💪 Health & Fitness
4.5😐(9.1K ratings)
FreeIn-App Purchases
Stress Monitor for Watch screenshot 1
Stress Monitor for Watch screenshot 2
Stress Monitor for Watch screenshot 3
Stress Monitor for Watch screenshot 4
Stress Monitor for Watch screenshot 5
Stress Monitor for Watch screenshot 6

Monitor your stress, activity, and sleep using your Apple Watch data. Gain insights into your body's signals like HRV and resting heart rate to understand what impacts your well-being. Receive personalized recommendations for better mental, emotional, and physical performance.

What We Love

  • 🚀 Accurate stress monitoring
  • 👍 Helpful for managing chronic conditions
  • 💡 Provides useful insights and data
  • 👍 Good user interface and design

Room to Improve

  • 🐛 Inconsistent or inaccurate readings
  • 💰 Expensive subscription model
  • 🔒 Privacy concerns around data collection
FITTR: Health & Fitness App#2

FITTR: Health & Fitness App by SQUATS

Health Tests, Workouts & Diets
Strong Contender
💪 Health & Fitness
4.6😊(2.4K ratings)
FreeIn-App Purchases
FITTR: Health & Fitness App screenshot 1
FITTR: Health & Fitness App screenshot 2
FITTR: Health & Fitness App screenshot 3
FITTR: Health & Fitness App screenshot 4
FITTR: Health & Fitness App screenshot 5
FITTR: Health & Fitness App screenshot 6

This app helps you proactively manage your health through a science-backed ecosystem. It integrates wearables, smart tools, and lab tests to help you understand your body, diagnose potential issues, and implement personalized lifestyle interventions for long-term well-being.

What We Love

  • 👍 Excellent fitness and nutrition guidance
  • 👍 Helpful and supportive community
  • 👍 Customized diet and workout plans
  • 👍 Comprehensive knowledge base

Room to Improve

  • 🐛 Inconsistent customer support
  • 🐛 Buggy app performance issues
  • 🐛 Lack of flexibility in coach selection
Visible: Pacing for illness#3

Visible: Pacing for illness by Visible Health Inc. (US)

For Long Covid, ME/CFS, POTS+
Worth Considering
💪 Health & Fitness
4.8😊(3.4K ratings)
Free
Visible: Pacing for illness screenshot 1
Visible: Pacing for illness screenshot 2
Visible: Pacing for illness screenshot 3
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Visible: Pacing for illness screenshot 6

Manage energy-limiting health conditions like Long Covid and ME/CFS through personalized pacing insights. Track biometrics, log symptoms, and understand patterns to reduce crashes and improve daily well-being. Share health reports with your doctor and contribute to research.

What We Love

  • 🚀 Helpful for pacing and managing energy levels
  • 👍 Easy to use and customizable
  • 🚀 Provides valuable data and insights
  • 👍 Responsive and supportive development team

Room to Improve

  • 🐛 Occasional technical issues and glitches
  • 💡 Lack of integration with wearable devices
  • 🔋 Concerns about privacy and data usage

More Fatigue Monitoring App apps to explore

4
iHeart-Pulse Rate Monitor App.
iHeart-Pulse Rate Monitor App.
iHeart-Pulse Rate Monitor App.
Log body info:Smart BP Tracker
Free

Track your heart rate in real-time with visual charts. Log daily health check-ins, habits, blood pressure, and blood sugar. Develop healthier routines and monitor your activity.

Real-time heart rate trackingDaily health check-in loggingBlood pressure and sugar log
💪 Health & Fitness
(6.9K)
free with in-app purchases
5
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
iCardiac: Heart Rate & Health
Heart Rate & Blood Pressure
Free

Monitor your heart health and overall well-being with advanced tracking and AI-powered insights. Analyze heart rate, blood pressure, and mood to understand your body's signals and receive personalized health guidance.

Precise heart monitoring (HR, HRV)Blood pressure, temperature, SpO2 trackingMood and emotion correlation
💪 Health & Fitness
(29K)
free with in-app purchases
6
StressWatch: AI Stress Monitor
StressWatch: AI Stress Monitor
StressWatch: AI Stress Monitor
HRV & Habit Tracker for Watch
Free

This app uses your Apple Watch data to monitor stress levels through heart rate variability. It helps you build healthier habits, improve sleep, and understand your body's response to daily activities, aiming to lower your Bio Age.

Real-time stress monitoring via Apple WatchHeart Rate Variability (HRV) analysisHabit tracking for better wellbeing
💪 Health & Fitness
(23K)
freemium
7
Sleep Monitor: Sleep Tracker
Sleep Monitor: Sleep Tracker
Sleep Monitor: Sleep Tracker
Sleep Recorder, Talk & Cycle
Free

This app helps you sleep better by tracking your sleep cycles, recording snoring and sleep talking, and offering guided exercises and soothing sounds. It provides detailed reports and smart alarms to help you wake up refreshed.

Fall asleep faster with guided exercisesRecord snoring and sleep talkingTrack sleep cycles (light, deep, REM)
💪 Health & Fitness
(5.2K)
free with in-app purchases
8
BodyWave: Health Tracker
BodyWave: Health Tracker
BodyWave: Health Tracker
Workout, Stress, HRV, Health
Free

This app helps you build a personalized daily wellness plan, track your health task achievements, and monitor your physical health evolution. Gain insights into stress levels with HRV monitoring and customize your dashboard to prioritize what matters most.

Personalized daily wellness plansTrack health task achievementsMonitor daily health evolution (heart rate, sleep)
💪 Health & Fitness
(20K)
free with in-app purchases
9
Blood Oxygen App- Watch
Blood Oxygen App- Watch
Blood Oxygen App- Watch
Log & track pulse o2 levels
Free

Monitor and manage vital health metrics like blood oxygen, heart rate, and blood pressure. Receive automatic alerts for critical changes and utilize breathing exercises for relaxation. Syncs with Apple Health for a comprehensive view of your well-being.

Blood oxygen (SpO2) logging and trackingAutomatic low oxygen level notificationsHeart rate and HRV monitoring
🏥 Medical
(635)
free with in-app purchases
10
HeartBit: Heart Health Tracker
HeartBit: Heart Health Tracker
HeartBit: Heart Health Tracker
Accurate variability monitor
Free

Monitor your heart rate, analyze stress levels, and gain valuable health insights with this comprehensive wellness tool. It offers real-time tracking, personalized tips, and detailed reports to help you understand your body and improve your well-being.

Real-time heart rate monitoringStress level analysisComprehensive health insights
💪 Health & Fitness
(5.9K)
free with in-app purchases
11
Fatigue Alert - Stay Awake
Fatigue Alert - Stay Awake
Fatigue Alert - Stay Awake
Real-Time Fatigue Monitoring
Free

This app monitors your head posture in real-time using AirPods to detect drowsiness. It provides timely alerts through sound, vibration, or Apple Watch haptics to keep you awake and alert, even when using other apps or with the screen locked.

Real-time head posture monitoringDrowsiness detection alertsMultiple alert methods (sound, vibration, haptics)
💪 Health & Fitness
(17)
freemium
12
ReadiOne by Fatigue Science
ReadiOne by Fatigue Science
ReadiOne by Fatigue Science
by Sleep Performance, Inc.
Free

This app helps workers visualize their real-time and future fatigue levels using a biomathematical model. It analyzes sleep data to predict performance impacts and identify periods of greatest fatigue risk, ensuring fitness for duty.

Real-time and future fatigue level visualization (ReadiScores)SAFTE biomathematical sleep analysisWearable data integration (Gamin, Fitbit)
💪 Health & Fitness
(13)
free
13
MyZio
MyZio
MyZio
Symptom logging for MyZio
Free

Log your symptoms and track your ECG monitor's shipping status. Access helpful information and instructional videos to guide you through your monitoring experience.

Log and edit symptomsTrack monitor shipping statusRegister Zio ECG monitor
🏥 Medical
(63K)
free
14
RelaxWatch: Stress&HRV Tracker
RelaxWatch: Stress&HRV Tracker
RelaxWatch: Stress&HRV Tracker
Stress & HRV Tracker for Watch
Free

This app monitors stress levels using Heart Rate Variability (HRV) and heart rate data from your Apple Watch. It provides clear insights, personalized plans, and trend reports to help you manage stress, improve sleep, and enhance overall health.

Real-time dynamic stress monitoringWatch face widgets for quick accessSmart stress alerts and warnings
💪 Health & Fitness
(557)
subscription
15
Pillow: Sleep Tracker
Pillow: Sleep Tracker
Pillow: Sleep Tracker
Smart Alarm & Snore Recorder
Free

This app helps you understand and improve your sleep. It automatically tracks your sleep cycles, analyzes heart rate, and records audio events like snoring. Get personalized insights and tips to wake up feeling refreshed.

Automatic sleep trackingSmart alarm clockSnore and sleep talking recorder
💪 Health & Fitness
(96K)
freemium
16
Livity: Sleep & Health Tracker
Livity: Sleep & Health Tracker
Livity: Sleep & Health Tracker
Watch, Workout & Heart Rate
Free

This app provides advanced biometric tracking for personalized recovery, sleep, and training insights. It offers detailed analysis of heart rate variability, sleep stages, and cardiovascular load to optimize your physical potential and monitor overall health. Prioritizing privacy, all data is processed locally on your device.

Recovery Score (HRV & Resting HR)Sleep Analysis & OptimizationSmart Training Guidance
💪 Health & Fitness
(1.1K)
free with in-app purchases
17
Bearable - Symptom Tracker
Bearable - Symptom Tracker
Bearable - Symptom Tracker
Mood, Health, Migraine, Period
Free

This app helps you understand and manage your health by tracking symptoms, triggers, and treatments. It allows you to identify patterns and correlations to gain better control over chronic illnesses, pain, mood, and more. Securely store and analyze your health data to share with your doctor.

Symptom trackingTrigger identificationMedication and treatment logging
💪 Health & Fitness
(6.1K)
free with in-app purchases
18
Withings
Withings
Withings
THE NEXUS OF YOUR HEALTH
Free

This app serves as a central hub for managing your health, consolidating data from various devices and apps. It provides insights, educational content, and tools to track progress towards goals like weight loss, activity, and sleep. Share your health data securely with your doctor for informed medical decisions.

Unified health data from devices and appsWeight and body composition monitoringActivity and sleep tracking
💪 Health & Fitness
(362K)
free with in-app purchases
19
Pulse & Heart Rate Monitor
Pulse & Heart Rate Monitor
Pulse & Heart Rate Monitor
HR, Blood Pressure App& Oxygen
Free

Track your heart rate, blood oxygen, and blood pressure with this comprehensive health monitoring app. Gain insights into your fitness levels, stress, and readiness through detailed data analysis and guided breathing exercises. Seamlessly syncs with your device's health app for a complete overview.

Heart Rate & HRV MonitoringBlood Oxygen RecordingBlood Pressure Logging
💪 Health & Fitness
(6.4K)
free with in-app purchases
20
Heart Analyzer: Pulse Tracker
Heart Analyzer: Pulse Tracker
Heart Analyzer: Pulse Tracker
Watch Health & Cardio Metrics
Free

Gain deep insights into your heart health using data from your Apple Watch. Visualize trends, analyze metrics like Cardio Recovery and Heart Rate Zones, and generate detailed PDF reports. Offers advanced features and privacy-focused data handling.

Dashboard with daily summariesVisualized heart rate and health data chartsHealth vital trend assessment
💪 Health & Fitness
(22K)
free with in-app purchases

FAQ about Fatigue Monitoring App

What is the best fatigue monitoring app for iPhone?
Stress Monitor for Watch tops our fatigue monitoring app ranking as of July 2026, with a 4.5-star average from 9.1K App Store ratings, and it's free to download.
Yes — 20 of the top fatigue monitoring app we rank are free to download, including Stress Monitor for Watch and FITTR: Health & Fitness App.
Stress Monitor for Watch has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
This app processes heart data from your Apple Watch to monitor your stress, activity, and sleep. It analyzes signals like Heart Rate Variability and Resting Heart Rate to show your current capacity for mental, emotional, and physical performance. You can also track what factors influence your stress and well-being.
Key features include real-time stress monitoring, analysis of HRV and resting heart rate, tracking of activity and sleep trends, personalized recommendations for well-being, integration with Apple Watch ECG and Breathe apps, weekly data highlights, and a daily stress heat-map calendar.