Comparison

Function Health vs Phoenix APOE4

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

Phoenix APOE4

Features
Read full description

Phoenix APOE4 is the companion app for members of The Phoenix Community, the world's first science-driven platform helping APOE4 carriers beat the odds against Alzheimer's disease.WHAT IS APOE4?Carrying the APOE4 gene increases your risk of Alzheimer's by 3-15x. But genetics isn't destiny. Research shows that targeted lifestyle interventions can dramatically reduce your risk. Phoenix APOE4 helps you track and optimize the factors that matter most. KEY FEATURES Daily Check-ins Log your sleep, exercise, stress, and other key health metrics in seconds. Our simple check-in system helps you build consistent habits and track your progress over time.Apple Health IntegrationAutomatically sync data from Apple Health including steps, sleep, heart rate, and workouts. See your health data in one place with APOE4-specific context.Progress TrackingVisualize your trends and improvements. Our dashboard shows how your daily habits translate into long-term brain health outcomes.Community ConnectionPart of a global community of APOE4 carriers who refuse to accept "inevitable" decline. Share experiences, learn from others, and stay accountable. WHO IS THIS FOR? Phoenix APOE4 is exclusively for members of The Phoenix Community. Membership includes access to this app plus our full web platform, expert Q&As, accountability pods, and science-based experiment protocols.To join, visit thephoenix.community ABOUT THE PHOENIX Founded by Dr. Kevin Tran (PharmD), an APOE4/4 carrier himself, The Phoenix Community combines cutting-edge science with real-world experimentation and peer support. We believe everyone deserves the tools to build their personalized protocol for brain health and longevity. IMPORTANT DISCLAIMERS This app is designed for general wellness tracking and is not intended to diagnose, treat, cure, or prevent any disease. Always consult with your healthcare provider before making changes to your health routine.The Phoenix Community is independent and not sponsored by any pharmaceutical or supplement companies. SUBSCRIPTION & PRICING This app is free to download but requires an active Phoenix Community membership to use. Subscriptions are managed through our website at thephoenix.community. We do not offer in-app purchases.PRIVACYYour health data is private and secure. We never sell your data or use it for advertising. See our full privacy policy at thephoenix.community/privacySUPPORTQuestions? Contact us at support@thephoenix.community

Screenshots

Function Health4 screens
Phoenix APOE44 screens

Verdict

The call

The clearest difference is update cadence: Function Health at weekly against Phoenix APOE4's monthly. 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.

UpkeepUpdate frequency

Function Health ships an update weekly, Phoenix APOE4 monthly. The most recent releases landed on September 26, 2026 and September 4, 2026 respectively.

Scorecard1 real difference · 9 level
Function Health versus Phoenix APOE4: the parameters behind the verdict, then further details
ParameterFunction HealthPhoenix APOE4
PriceFreeFree
Rating4.9 (25K ratings) — better—
Positive reviews61.9% of reviews—
Number of ratings25K — better—
Update frequencyWeekly — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationSubscription—
DevicesiPhoneiPhone, iPod — better
Requires iOS16.415.1 — better
Further details — not scored
Size201 MB45 MB
Age rating17+4+
DeveloperFunction HealthThe Phoenix Protocol Pte. Ltd.

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

Phoenix APOE4

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Function Health

No in-app purchases

None

Phoenix APOE4

No in-app purchases

Questions

Is Function Health free?
Function Health is free to download, with no in-app purchases.
Is Phoenix APOE4 free?
Phoenix APOE4 is free to download, with no in-app purchases.
Do Function Health or Phoenix APOE4 have ads?
Neither Function Health nor Phoenix APOE4 shows ads.
Which is updated more often, Function Health or Phoenix APOE4?
Function Health ships an update weekly, and Phoenix APOE4 monthly. Most recently, Function Health was updated on September 26, 2026 and Phoenix APOE4 on September 4, 2026.

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