Molekule vs Function Health
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Molekule
This app connects to advanced air purifiers and humidifiers, offering real-time air quality monitoring and control. It allows users to track filter status, schedule operation, and utilize features like dark mode for a healthier home environment.
- PECO technology air purification
- Real-time air quality sensing
- Filter status tracking
- Dark mode scheduler
- Reliable cloud connection
- Control multiple devices
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Molekule has reinvented the air purifier using its groundbreaking PECO technology to safely destroy the widest range of pollutants compared to conventional purifiers. Now, with a refreshed app experience, breathing clean air is even more of a breeze. PROVEN CLEAN AIR Beautiful outside, breakthrough inside, Molekule air purifiers destroy allergens, bacteria, mold, viruses, and airborne chemicals (VOCs), delivering clean air. Molekule’s PECO technology destroys pollutants 1000x smaller than what the traditional HEPA standard tests for. AIR QUALITY SENSING The particle sensors in Air Pro and Air Mini+ help you see your indoor air particle level with a color-coded scale, giving you a window into your air. TAP. SWIPE. BREATHE. The Molekule app connects the Molekule Air, Air Mini, Air Mini+, and Air Pro to the cloud, enabling many great features. RELIABLE CONNECTION The improved experience helps ensure your Molekule air purifier and mobile device stay connected. FILTER STATUS Molekule air purifiers use PECO-Filters to trap large particles and destroy pollutants. The app lets you track your filter’s status, so you know when to replace them. DARK MODE SCHEDULER for Molekule Air For those sensitive to light while sleeping, Dark mode turns off the light in the device. We recommend using this mode only as necessary, since the light enables the PECO-Filter to destroy pollutants. QUESTIONS OR FEEDBACK? Reach out to our customer service team: help@molekule.com For more guidance and FAQs, visit help.molekule.com
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.
- 160+ lab tests annually
- Personalized health protocols
- Private AI Chat for results
- Connect health wearables
- Advanced MRI & CT scans
- Upload health records
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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
Verdict
The clearest difference is review sentiment: Function Health at 62% against Molekule's 17%. Function Health also leads on rating (4.9 vs 4.4) and update cadence (weekly vs every 2 months). Molekule's advantage is monetization model (free vs subscription). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Function Health holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 11K and 25K respectively. Written reviews point the same way: 17% of Molekule's written reviews are positive against 62% of Function Health's.
Molekule ships an update every 2 months, Function Health weekly. Both last shipped on September 28, 2026.
| Parameter | Molekule | Function Health |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (11K ratings) | 4.9 (25K ratings) — better |
| Positive reviews | 17.2% of reviews | 61.9% of reviews — better |
| Number of ratings | 11K | 25K — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.5 — better | 16.4 |
| Further details — not scored | ||
| Size | 112 MB | 201 MB |
| Age rating | 4+ | 17+ |
| Developer | MOLEKULE GROUP, INC. | Function Health |
Customer experience
Molekule
Function Health
User reviews
Molekule
From 11K App Store ratingsWhat we love
- 🚀 Remote operating
- 🌟 Great air purifier
- 👍 Sleek design
- 💨 Helps with allergies
Room to improve
- 🐛 Buggy app
- 🔌 Connectivity issues
- 🕰️ Unreliable filter status
- 📱 Useless app
- 🤯 Frustrating setup
Function Health
From 25K App Store ratingsWhat 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
Molekule
Reported bugs
4 issues- App crashes frequently
- Inability to change app language
- Devices randomly disconnecting from app
- Inaccurate filter life reporting
Requested features
3 requests- Scheduling options for auto mode
- Ability to order filters directly from app
- Improved app stability and reliability
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
Molekule
No in-app purchases
Function Health
No in-app purchases







