Comparison

Function Health vs NockOut

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

NockOut

Connect with local athletes, discover sports venues, and manage your sports activities. Improve your game with fitness programs and track your progress. Find events and join communities to enhance your sports experience.

Highlights
  • Connect with local players and groups
  • Discover and book sports venues
  • Access fitness programs and learn from professionals
  • Track progress and integrate with HealthKit
  • Explore activities and events
  • Manage teams and RSVPs
Features
Read full description

Join the ultimate sports connection hub with NockOut - your one-stop solution for all sports-related needs. NockOut is designed to bring sports enthusiasts together, making it easier than ever to connect with local players, discover venues, manage groups, and enhance your sports experience. Whether you're looking to play a casual game of badminton, organize a football match, or seek expert advice to improve your fitness plan, NockOut has got you covered. Key Features: Connect with Local Players and Groups 1. Find playpals and groups** in your area based on your skill level, sports interests, and availability. 2. Host or join games and challenge friends, players, and teams nearby. 3. Ensure your safety and privacy by controlling who you play with. 4. Invite friends to join NockOut and share your sports activities with them. 5. Form your team and manage RSVPs to keep track of attendees.** 6. Boost your sports profile by tracking your games and receiving ratings for your skills. Discover and Book Venues 1. Easily discover and book sports facilities** and activity venues near you. 2. Choose from hourly bookings, session passes, or membership packages.** 3. Access detailed information about amenities, pricing, reviews, and ratings. 4. Enjoy confirmed and guaranteed bookings with the option for easy cancellations and refunds.** 5. Benefit from exclusive discounts and offers at your favorite venues.** Learn and Improve 1. Access sports-based fitness programs and learn from professionals to enhance your game.** 2. Participate in master classes and community discussions to gain insights and tips.** 3. Explore curated content, blogs, and resources tailored to help you improve your skills.** Manage Your Sports Life 1. Track your progress and consistency across different activities. 2. Integrate with HealthKit to monitor your fitness goals, including step count, calories burned, and heart rate.** 3. Compete with playpals through leaderboards and earn loyalty points from select clubs.** Explore Activities and Events 1. Find exciting weekend activities, treks, marathons, and local events to participate in.** 2. Stay updated with real-time alerts and notifications for games and events.** Note: ** Features Coming Soon

Screenshots

Function Health4 screens
NockOut4 screens

Verdict

The call

Function Health and NockOut both sit at 4.9 stars, but that hides the real split: 100% of NockOut's written reviews are positive against 62% of Function Health's. NockOut also leads on monetization model (free vs subscription). Function Health's advantage is ratings volume (25K vs 6). 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 Function Health against 5.0 for NockOut. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 6, 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 NockOut's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Function Health versus NockOut: the parameters behind the verdict, then further details
ParameterFunction HealthNockOut
PriceFreeFree
Rating4.9 (25K ratings)5.0 (6 ratings) — better
Positive reviews62.0% of reviews100.0% of reviews — better
Number of ratings25K — better6
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNoNo
MonetizationSubscriptionFree — better
DevicesiPhoneiPhone
Requires iOS16.416.4
Further details — not scored
Size202 MB52 MB
Age rating17+4+
DeveloperFunction HealthSubramanya N

Customer experience

Function Health

All ratings24,885 ratings
Positive99.0%
Neutral0.4%
Negative0.6%
Written reviews347 reviews
Positive62.0%
Neutral5.5%
Negative32.6%

NockOut

All ratings6 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

NockOut

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Function Health

No in-app purchases

None

NockOut

No in-app purchases

Questions

Is Function Health free?
Function Health is free to download, with no in-app purchases.
Is NockOut free?
NockOut is free to download, with no in-app purchases.
Which has better reviews, Function Health or NockOut?
NockOut is rated higher. Function Health averages 4.9 out of 5 from 25K ratings, while NockOut averages 5.0 from 6 ratings.
Do Function Health or NockOut have ads?
Neither Function Health nor NockOut shows ads.
Which is updated more often, Function Health or NockOut?
Function Health ships an update weekly, and NockOut weekly. Most recently, Function Health was updated on October 14, 2026 and NockOut on October 7, 2026.

Other comparisons