Function Health vs Rouge Care
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Rouge Care
This app provides structured guidance and automated tracking for red light therapy sessions. It helps users achieve their wellness, recovery, or skin health goals with personalized programs and device control.
- Guided red light therapy programs
- Device control (on/off)
- Personalized goal-based sessions
- Automatic session tracking
- Usage pattern analysis for recommendations
- Consistency tracking
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Red light therapy works best when it's done right. And done consistently. The Rouge Care app gives you the structure to make that happen. Built for Rouge Care G4 devices and beyond, the app turns your panel into a guided system tailored to your goals. Control your device from your phone. Turn your Rouge Care panel on and off directly from the app. No friction, no guesswork. Just seamless control when you need it. Programs built around what you want to achieve. Whether it's recovery, skin health, performance, or overall wellness, the app builds structured programs based on your goals. No more random sessions. Every protocol is intentional. Protocols that actually make sense. Each program guides you through optimized sessions. Timing, frequency, progression. All mapped out. You don't need to figure out "how long" or "how often." We already did. Automatic session tracking. Your usage is logged in real time. Clear view of your consistency. Clear view of your progress. No manual tracking. No missed sessions. Smarter recommendations over time. The more you use the app, the better it gets. By analyzing your usage patterns, Rouge Care refines your programs to help you get the most out of every session. Built for consistency and results. Red light therapy isn't a one-time thing. This app keeps you on track with structured guidance and a clear routine so you actually see the results you came for. Designed to match the Rouge Care experience. Clean, minimal, intuitive. Simple where it should be, powerful where it matters.
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Verdict
Function Health and Rouge Care both sit at 4.9 stars, but that hides the real split: 100% of Rouge Care's written reviews are positive against 62% of Function Health's. Rouge Care also leads on monetization model (free vs subscription). Function Health's advantage is ratings volume (25K vs 2) and update cadence (weekly vs monthly). On price, rating, 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.
On the App Store both sit at effectively the same score — 4.9 for Function Health against 5.0 for Rouge Care. 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 Rouge Care's.
Function Health ships an update weekly, Rouge Care monthly. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.
| Parameter | Function Health | Rouge Care |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (25K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 61.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 25K — better | 2 |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Subscription | Free — better |
| Best chart rank | #182 — better | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 203 MB | 66 MB |
| Age rating | 17+ | 12+ |
| Developer | Function Health | RougeCare |
Customer experience
Function Health
Rouge Care
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
Rouge Care
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Function Health
No in-app purchases
Rouge Care
No in-app purchases








