Comparison

Function Health vs WavyFields Vitality

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

WavyFields Vitality

This app gamifies a wellness course, focusing on five key pillars: Mind, Digestion, Body, Breath, and Sleep. It offers science-backed lessons, daily challenges, and built-in tools like breathing exercises and mood tracking. An optional one-time purchase removes ads and provides an eBook.

Highlights
  • Gamified learning with XP and levels
  • Daily streaks and streak shields
  • Unlockable badges for mastery
  • Daily micro-challenges
  • Breathing exercises
  • Mood tracking with insights
  • Journaling with timeline view
Features
Read full description

WavyFields Vitality turns a professional wellness course into a daily habit game — completely free. MASTER THE 5 PILLARS OF VITALITY Work through 36 science-backed lessons across Mind, Digestion, Body, Breath, and Sleep. Every lesson is free, no paywall, no subscription. GAMIFIED LEARNING THAT STICKS • Earn XP and level up as you complete lessons • Build daily streaks and protect them with Streak Shields • Unlock badges for pillar mastery and consistency • Complete daily micro-challenges and wellness practices BUILT-IN TOOLS FOR EVERY DAY • Breathing exercises and body scan practices • Mood tracking with pattern insights over time • Journaling with a full timeline view • Daily challenge cards to keep momentum going LEARN AT YOUR OWN PACE Lessons are short, readable, and actionable. Pick up where you left off anytime. Review completed lessons whenever you need a refresher. UPGRADE TO PREMIUM (ONE-TIME) Remove ads permanently and receive the WavyFields Vitality PDF eBook — yours to keep forever. No recurring charges, ever. Created by Michael Henne, MPH — public health educator and founder of WavyFields, a nonprofit dedicated to accessible wellness education. Your 5 pillars. Your pace. Your vitality.

Screenshots

Function Health4 screens
WavyFields Vitality4 screens

Verdict

The call

Function Health and WavyFields Vitality both sit at 4.9 stars, but that hides the real split: 100% of WavyFields Vitality's written reviews are positive against 62% of Function Health's. WavyFields Vitality also leads on update cadence (every 3 days vs weekly). Function Health's advantage is in-app purchases (none vs 4) and ratings volume (25K vs 2). On price, rating, ads 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. WavyFields Vitality sells 4 one-off in-app purchases. Function Health asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Function Health against 5.0 for WavyFields Vitality. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 62% of Function Health's written reviews are positive against 100% of WavyFields Vitality's.

UpkeepUpdate frequency

Function Health ships an update weekly, WavyFields Vitality every 3 days. The most recent releases landed on October 2, 2026 and September 26, 2026 respectively.

Scorecard5 real differences · 5 level
Function Health versus WavyFields Vitality: the parameters behind the verdict, then further details
ParameterFunction HealthWavyFields Vitality
PriceFreeFree
Rating4.9 (25K ratings)5.0 (2 ratings) — better
Positive reviews62.0% of reviews100.0% of reviews — better
Number of ratings25K — better2
Update frequencyWeeklyEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhoneiPhone
Requires iOS16.416.4
Further details — not scored
Size201 MB63 MB
Age rating17+12+
DeveloperFunction HealthWavyFields Inc.

Customer experience

Function Health

All ratings24,731 ratings
Positive99.0%
Neutral0.4%
Negative0.6%
Written reviews342 reviews
Positive62.0%
Neutral5.6%
Negative32.5%

WavyFields Vitality

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

WavyFields Vitality

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Function Health

No in-app purchases

4 purchases

WavyFields Vitality

One-time4
  • Starter Coin Pack$0.99
  • Value Coin Pack$1.99
  • Power Coin Pack$4.99
Show 1 more
  • Go Ad-Free + Get Ebook$7.99

Questions

Is Function Health free?
Function Health is free to download, with no in-app purchases.
Is WavyFields Vitality free?
WavyFields Vitality is free to download, with in-app purchases available.
Which has better reviews, Function Health or WavyFields Vitality?
WavyFields Vitality is rated higher. Function Health averages 4.9 out of 5 from 25K ratings, while WavyFields Vitality averages 5.0 from 2 ratings.
Do Function Health or WavyFields Vitality have ads?
Neither Function Health nor WavyFields Vitality shows ads.
Which is updated more often, Function Health or WavyFields Vitality?
Function Health ships an update weekly, and WavyFields Vitality every 3 days. Most recently, Function Health was updated on October 2, 2026 and WavyFields Vitality on September 26, 2026.

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