Comparison

Function Health vs Oxiline

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

Head to head
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.

About

Oxiline

This app connects to health devices to visualize, track, and export your health measurements. It provides real-time data visualization and a comprehensive overview of your health metrics, helping you monitor progress and share data with healthcare providers.

Highlights
  • Bluetooth device integration
  • Real-time data visualization
  • Comprehensive health overview
  • Data export for healthcare providers
  • Progress tracking over time
  • Secure and private data storage
Features
Read full description

Welcome to Oxiline App – Your Ultimate Health Monitoring Companion The Oxiline App seamlessly integrates with Oxiline health devices to bring your health data to life. Our app makes it easy to connect via Bluetooth, allowing you to visualize, track, and export your health measurements in real-time. Whether you're managing chronic conditions or simply committed to staying on top of your health, Oxiline Health Connect is here to empower you and support your journey. Easy Device Integration: Connect effortlessly to your Oxiline health devices via Bluetooth to start tracking immediately. Real-Time Data Visualization Get instant access to your health metrics displayed in clear, easy-to-understand graphs and charts. Comprehensive Health Overview: Monitor various health metrics, including blood pressure, heart rate, and more, all from the comfort of your phone. Data Export Made Simple: Share your health data with healthcare providers by exporting reports directly from the app, ensuring you receive the best care. Track Your Progress: Keep an eye on your health trends over time, helping you understand the effectiveness of your health and wellness strategies. Secure & Private: Your health data's security and privacy are our top priorities. Enjoy peace of mind knowing your information is protected with top-tier encryption. Why choose Oxiline Health Connect? Oxiline Health Connect is more than just an app; it's a partner in your health and wellness journey. Our intuitive design, coupled with powerful functionality, makes health monitoring accessible and straightforward. Stay motivated, informed, and connected with your health like never before. Download Oxiline Health Connect today and take the first step towards a healthier, more informed you. Your health journey, visualized and simplified. Have questions or need support? Visit our website www.oxiline.shop or contact our customer support team at support@oxiline.shop For more information, please read our Privacy Policy and Terms and Conditions available in the app or on our website. Disclaimer: This app is intended for health monitoring purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor before making any medical decisions.

Screenshots

Function Health4 screens
Oxiline4 screens

Verdict

The call

The clearest difference is review sentiment: Function Health at 62% against Oxiline's 14%. Function Health also leads on rating (4.9 vs 4.1) and update cadence (weekly vs monthly). Oxiline's advantage is monetization model (free vs subscription). On price, ads, in-app purchases and device support 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

Function Health holds the better App Store score, 4.9 against 4.1. Both are backed by a comparable volume of ratings — 25K and 6.3K respectively. Written reviews point the same way: 62% of Function Health's written reviews are positive against 14% of Oxiline's.

UpkeepUpdate frequency

Function Health ships an update weekly, Oxiline monthly. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

Scorecard5 real differences · 5 level
Function Health versus Oxiline: the parameters behind the verdict, then further details
ParameterFunction HealthOxiline
PriceFreeFree
Rating4.9 (25K ratings) — better4.1 (6.3K ratings)
Positive reviews61.9% of reviews — better13.5% of reviews
Number of ratings25K — better6.3K
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationSubscriptionFree — better
DevicesiPhoneiPhone
Requires iOS16.416.4
Further details — not scored
Size201 MB102 MB
Age rating17+12+
DeveloperFunction HealthOxiline LLC

Customer experience

Function Health

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

Oxiline

All ratings6,288 ratings
Positive76.0%
Neutral5.0%
Negative19.0%
Written reviews495 reviews
Positive13.5%
Neutral13.9%
Negative72.5%

User reviews

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

Oxiline

From 6.3K App Store ratings

What we love

  • 🚀 Accurate device
  • 👍 Easy to use
  • 💡 Helpful charting and data logging

Room to improve

  • 🐛 Connectivity issues with app
  • 🐛 Unreliable data sync
  • 🐛 Buggy app performance
  • 🔒 Lack of Apple Health integration

Bugs and requests

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

Oxiline

Reported bugs

4 issues
  • App crashes frequently
  • Bluetooth connection drops unexpectedly
  • Historical data not syncing to app
  • Incorrect time zone and date display in charts

Requested features

4 requests
  • Add ability to switch between mg/dL and mmol/L
  • Allow adding custom notes to readings
  • Improve app UI and navigation
  • Enhance data export and sharing options

In-app purchases

None

Function Health

No in-app purchases

None

Oxiline

No in-app purchases

Questions

Is Function Health free?
Function Health is free to download, with no in-app purchases.
Is Oxiline free?
Oxiline is free to download, with no in-app purchases.
Which has better reviews, Function Health or Oxiline?
Function Health is rated higher. Function Health averages 4.9 out of 5 from 25K ratings, while Oxiline averages 4.1 from 6.3K ratings.
Do Function Health or Oxiline have ads?
Neither Function Health nor Oxiline shows ads.
Which is updated more often, Function Health or Oxiline?
Function Health ships an update weekly, and Oxiline monthly. Most recently, Function Health was updated on September 25, 2026 and Oxiline on September 24, 2026.

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