Comparison

Oura vs Function Health

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Oura

This smart ring and companion app provide daily health insights and personalized recommendations based on your body's biometrics. Track sleep, activity, and readiness with actionable guidance to improve overall wellness and understand your body's signals.

Highlights
  • Daily Sleep, Activity, and Readiness scores
  • Accurate biometric tracking (heart rate, temp, SpO2)
  • In-depth sleep analysis and optimization tips
  • Advanced activity tracking for various movements
  • Cycle insights and pregnancy tracking
  • Stress resilience and recovery guidance
  • Illness detection through body temperature shifts
Features
Read full description

Meet Oura Ring - the revolutionary smart ring that translates your body’s most meaningful messages to transform how you feel every day. The award-winning Oura App is your personal health companion, delivering valuable insights and daily recommendations to help you to make health and wellness a daily practice. THREE DAILY SCORES Your Sleep, Activity, and Readiness scores give you a clear understanding of the state of your body with actionable guidance on how to stay balanced. ACCURATE BY DESIGN Your finger provides the most accurate reading for over 30 biometrics like heart rate, body temperature, blood oxygen, and more. BEST-IN-CLASS SLEEP MONITORING Wake up to in-depth analysis of your sleep patterns and personalized tips to optimize your routine, so you’ll feel more energized every day. ADVANCED ACTIVITY TRACKING From mountain climbing to meditating, Oura Ring tracks your daily movement while prioritizing balance and rest. Measure your daily activities, calories, steps, and inactive time. CYCLE INSIGHTS Better understand your body’s cycle patterns or help improve your chances of getting pregnant by tracking daily and monthly body temperature trends. STRESS RESILIENCE Understand how daily stress is affecting your body and learn how to be more resilient to stress by finding balance between moments of strain and recovery. RECOVERY Get personalized insights and guidance on how rest and recovery affects your overall Readiness Score. Feeling under the weather? Activate Rest Mode to give yourself a break. ILLNESS DETECTION Oura Ring monitors shifts in your body temperature and heart rate so you can tell when you may be getting sick. LONG-TERM TRENDS View your daily, weekly, and monthly trends, and discover how your choices and environment affect your body. TRACK HABITS WITH TAGS Customize your experience and test out new habits by adding tags — like "caffeine" or "alcohol" — and discover how your choices affect your sleep and recovery. Oura Ring is not a medical device and is not intended to diagnose, treat, cure, monitor, or prevent medical conditions or illnesses. Oura Ring is only designed for general fitness and wellness purposes. Please do not make any changes to your medication, daily routines, nutrition, sleep schedule, or workouts without first consulting your doctor or another medical professional.

About

Function Health

Take control of your health with comprehensive lab testing, personalized protocols, and AI-powered insights. Understand your body's data, track changes over time, and make informed decisions for long-term wellness. Connect wearables and upload records for a complete health picture.

Highlights
  • 160+ lab tests annually
  • Personalized health protocols
  • Private AI Chat for results
  • Connect health wearables
  • Advanced MRI & CT scans
  • Upload health records
Features
Read full description

Function membership helps you take control of your health with 160+ lab tests each year, personalized Protocols, and Private AI Chat—all backed by advanced science and your real data. Built with top doctors, Function gives you the power to understand your body, track how it evolves, and make meaningful change. NOW AVAILABLE: HOME OR OFFICE BLOOD DRAWS Schedule a concierge blood draw at your home or office. A licensed specialist comes to you and completes your blood draw in under 20 minutes. Available in select locations. 160+ LAB TESTS Membership includes testing for your heart, hormones, thyroid, liver, kidneys, toxins, nutrients, inflammation, autoimmunity, immunity and more. ADVANCED MRI & CT SCANS Detect early signs of cancer and hundreds of other potential conditions with the option to purchase advanced imaging for your brain, pancreas, liver, spine, ovaries, prostate, heart and much more. PRIVATE AI CHAT Ask questions about your results, identify meaningful patterns, and figure out where to focus next, with Private AI Chat—built in partnership with top clinicians. CONNECT WEARABLES Connect Apple Health and other health devices and wearables to see how your activity, sleep, and daily habits affect your lab test results and long-term health. PROTOCOLS Translate your lab results, scans and health history into clear, evidence-based plans for nutrition, activity, and supplements—all customizable to your goals and preferences. UPLOAD HEALTH RECORDS Upload past lab test results, scans, and other medical records for a more complete view of your health, all in one secure place. PROGRESS YOU CAN SEE Twice-yearly and On-Demand testing helps you track your results over time, monitor for early signs of disease, and identify where to focus next. ADVANCED LAB TESTS Membership includes 160+ lab tests, plus the option to purchase advanced On-Demand tests for: - Detection of 50+ cancers - Alzheimer’s risk detection - MTHFR gene variants - Advanced MRI and CT scans starting at $365 - Food allergies and sensitivities - …and much more ACCESSIBILITY What could cost as much as $15,000 on your own is included with membership for just $365/year. Lab testing is available at over 2,000 lab locations across the US, with no insurance needed. SECURITY Function was built for privacy and security. Function is built to HIPAA standards. Your information is secure. How it works: 1. Join Function and schedule your first set of lab tests. 2. Get your results and personalized Protocols. Ask questions with your Private AI Chat. 3. See your progress with 60+ lab tests at your Mid-Year Test. 4. Purchase MRI or CT scans and other advanced On-Demand Tests any time. DISCLAIMER Function Health is a technology company and not a laboratory or medical provider. All laboratory and medical services are provided by independent third parties. Function Health does not offer medical advice, laboratory services, a diagnosis, medical treatment, or any form of a medical opinion; its services are not a substitute for medical care, medical advice, and/or a detailed discussion with a physician or other licensed provider. If you have any questions regarding any laboratory results or any other information that you access through Function Health, you should contact a physician or other licensed provider. All material, information, data, and content that Function Health provides is strictly for general information purposes. For additional important information: https:// www.functionhealth.com/terms-of-service.

Screenshots

Oura4 screens
Function Health4 screens

Verdict

The call

The clearest difference is monetization model: Oura at free against Function Health's subscription. Oura also leads on ratings volume (301K vs 25K) and chart position (#13 vs unranked). Function Health's advantage is review sentiment (62% vs 49%). On price, rating, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Oura against 4.9 for Function Health. That said, the two scores are not equally well evidenced: Oura has 301K ratings behind it against 25K, so its average is the more settled of the two. Written reviews are what separate them: 49% of Oura's written reviews are positive against 62% of Function Health's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. Both last shipped on September 25, 2026.

Scorecard4 real differences · 7 level
Oura versus Function Health: the parameters behind the verdict, then further details
ParameterOuraFunction Health
PriceFreeFree
Rating4.9 (301K ratings)4.9 (25K ratings)
Positive reviews49.3% of reviews61.9% of reviews — better
Number of ratings301K — better25K
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterSubscription
Best chart rank#13 — better—
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS16.0 — better16.4
Further details — not scored
Size452 MB201 MB
Age rating4+17+
DeveloperOura Health OyFunction Health

Customer experience

Oura

All ratings301,185 ratings
Positive97.2%
Neutral1.3%
Negative1.5%
Written reviews3,727 reviews
Positive49.3%
Neutral13.3%
Negative37.4%

Function Health

All ratings24,683 ratings
Positive99.0%
Neutral0.4%
Negative0.6%
Written reviews341 reviews
Positive61.9%
Neutral5.6%
Negative32.6%

User reviews

Oura

From 301K App Store ratings

What we love

  • 🚀 Accurate sleep tracking
  • 👍 Comfortable and stylish ring
  • 🔋 Long battery life
  • 💡 Helpful insights and recommendations
  • 👍 Seamless integration with Apple Health

Room to improve

  • 🐛 Inconsistent activity tracking
  • 🔒 Requires monthly subscription to access full data
  • 🐛 Inaccurate sleep stage detection
  • 🐛 Syncing and connectivity issues
  • 🔋 Battery life deterioration over time

Function Health

From 25K App Store ratings

What we love

  • 🚀 Seamless process for blood tests and results
  • 📊 Comprehensive health insights and tracking
  • 🧠 Helpful clinician notes and recommendations
  • 👍 User-friendly and visually appealing app
  • 💰 Affordable compared to other options

Room to improve

  • 🔍 Lack of communication and support responsiveness
  • 🐛 Some bugs and usability issues in the app

Bugs and requests

Oura

Reported bugs

4 issues
  • App crashes and freezes
  • Inability to connect ring to new devices
  • Disappearing or corrupted user data
  • Inconsistent firmware updates

Requested features

5 requests
  • Ability to manually edit sleep and activity data
  • More customization options for activity tracking
  • Integration with more fitness apps and ecosystems
  • Improved data visualization and trend analysis
  • Cycle tracking and insights for women

Function Health

Reported bugs

2 issues
  • App sometimes redirects back to the home screen when trying to view results
  • Occasional typos and formatting issues in the app

Requested features

3 requests
  • More customization options in the app settings
  • Ability to print or export test results and recommendations
  • Specific supplement recommendations rather than broad suggestions

In-app purchases

None

Oura

No in-app purchases

None

Function Health

No in-app purchases

Questions

Is Oura free?
Oura is free to download, with no in-app purchases.
Is Function Health free?
Function Health is free to download, with no in-app purchases.
Which has better reviews, Oura or Function Health?
Oura and Function Health are both rated 4.9 out of 5 on the App Store, from 301K and 25K ratings respectively.
Do Oura or Function Health have ads?
Neither Oura nor Function Health shows ads.
Which is updated more often, Oura or Function Health?
Oura ships an update weekly, and Function Health weekly. Most recently, Oura was updated on September 25, 2026 and Function Health on September 25, 2026.

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