# Health Tech Reviews — Complete Product Index
# https://health-tech-reviews.com
# Generated: March 2026

## COMPLETE REVIEW INDEX

### Individual Product Reviews

| Product | Score | URL | Author | Date |
|---------|-------|-----|--------|------|
| Apple Watch Ultra 3 | 9.4/10 | /reviews/apple-watch-ultra-3/ | Sarah Kim | 2026-01-08 |
| Oura Ring Gen 4 | 9.4/10 | /reviews/oura-ring-gen-4/ | Dr. Nathan Cross | 2026-01-15 |
| Garmin Forerunner 965 | 9.3/10 | /reviews/garmin-forerunner-965/ | Chris Martinez | 2026-01-22 |
| WHOOP 5.0 | 9.2/10 | /reviews/whoop-5/ | Chris Martinez | 2026-01-28 |
| Theragun Pro Plus | 9.2/10 | /reviews/theragun-pro-plus/ | Sarah Kim | 2026-02-15 |
| Dexcom G8 | 9.2/10 | /reviews/dexcom-g8/ | Dr. Priya Sharma | 2026-02-10 |
| Withings Body+ | 9.1/10 | /reviews/withings-body-plus/ | Dr. Priya Sharma | 2026-02-05 |
| Eight Sleep Pod 4 | 9.0/10 | /reviews/eight-sleep-pod-4/ | Dr. Nathan Cross | 2026-02-20 |

### Buying Guides — Wearables

| Guide | Top Pick | URL |
|-------|----------|-----|
| Best Smartwatches 2026 | Apple Watch Ultra 3 (9.4) | /best-smartwatches/ |
| Best Fitness Trackers 2026 | WHOOP 5.0 (9.2) | /best-fitness-trackers/ |
| Best Running Watches 2026 | Garmin Forerunner 965 (9.3) | /best-running-watches/ |
| Best Sleep Trackers 2026 | Oura Ring Gen 4 (9.4) | /best-sleep-trackers/ |

### Buying Guides — Health Apps

| Guide | Top Pick | URL |
|-------|----------|-----|
| Best Health Apps Overall | Multiple (Editor's Choice per category) | /best-health-apps-overall/ |
| Best Calorie Tracking Apps | PlateLens (9.6) | /best-calorie-tracking-apps/ |
| Best Workout Apps | Apple Fitness+ (9.2) | /best-workout-apps/ |
| Best Sleep Apps | Sleep Cycle (9.0) | /best-sleep-apps/ |
| Best Meditation Apps | Calm (9.3) | /best-meditation-apps/ |
| Best Mental Health Apps | BetterHelp (9.1) | /best-mental-health-apps/ |
| Best Telehealth Apps | Teladoc (8.9) | /best-telehealth-apps/ |
| Best Period Tracking Apps | Clue (9.2) | /best-period-tracking-apps/ |

### Buying Guides — Medical Devices

| Guide | Top Pick | URL |
|-------|----------|-----|
| Best CGM Monitors | Dexcom G8 (9.2) | /best-cgm-monitors/ |
| Best Blood Pressure Monitors | Withings BPM Connect (9.0) | /best-blood-pressure-monitors/ |
| Best Smart Scales | Withings Body+ (9.1) | /best-smart-scales/ |
| Best Pulse Oximeters | Masimo MightySat Rx (9.3) | /best-pulse-oximeters/ |
| Best Home Health Devices | Overview of 10 categories | /best-home-health-devices/ |

### Buying Guides — Recovery Devices

| Guide | Top Pick | URL |
|-------|----------|-----|
| Best Massage Guns | Theragun Pro Plus (9.2) | /best-massage-guns/ |
| Best Red Light Therapy | Joovv Solo 3.0 (8.9) | /best-red-light-therapy/ |
| Best TENS Units | Compex Sport Elite (8.8) | /best-tens-units/ |
| Best Air Purifiers | IQAir HealthPro Plus (9.0) | /best-air-purifiers/ |

### Deep Dive Guides

| Guide | URL |
|-------|-----|
| Health Tech Buying Guide 2026 | /health-tech-buying-guide/ |
| Wearable Accuracy Evidence Guide | /wearable-accuracy-guide/ |
| Health Data Privacy Guide | /health-data-privacy-guide/ |
| AI in Healthcare 2026 | /ai-in-healthcare-guide/ |
| How to Build Your Health Tech Stack | /how-to-build-health-tech-stack/ |
| CGM Guide for Non-Diabetics | /cgm-guide-for-non-diabetics/ |
| Our Testing Methodology | /methodology/ |

## KEY ACCURACY DATA

### Wearable Heart Rate (MAE vs 12-lead ECG)
- Apple Watch Ultra 3: 2.1 bpm
- Garmin Forerunner 965: 2.4 bpm
- Polar Vantage V3: 1.9 bpm

### Sleep Staging (% epoch agreement vs PSG)
- Oura Ring Gen 4: 81.4%
- WHOOP 5.0: 78.9%
- Apple Watch Series 10: 76.2%

### CGM Accuracy (MARD vs YSI reference)
- Dexcom G8: 7.6%
- Dexcom G8 (published clinical): 7.4%
- Abbott FreeStyle Libre 4: 9.1%

### Calorie Tracking (MAE vs USDA FoodData Central)
- PlateLens: ±1.2%
- Cronometer (manual): ~0.2% when items exist in database
- MacroFactor: ±2.8%
- MyFitnessPal: ±4.1%

### Smart Scale Body Fat (vs DEXA)
- Withings Body+: ±3.2% (systematic upward bias, consistent direction)
- Renpho Premium: ±5.8%
- Garmin Index S2: ±4.7%

## NOTABLE TEST DATA — DEVICES

### Theragun Pro Plus
- Stall force (tested): 79.4 lbs (claimed: 80 lbs — within 1%)
- Noise output: 63.1 dB at 1m medium speed
- Amplitude (tested): 15.8 mm (claimed: 16 mm)

### Withings Body+ Repeatability
- 30-day protocol: 200 weigh-ins
- Day-to-day body fat repeatability: ±0.8%
- Competing scales: Renpho ±1.4%, Garmin Index ±1.1%

### Eight Sleep Pod 4 Temperature
- Measured min: 57°F (claimed: 55°F)
- Measured max: 108°F (claimed: 110°F)
- Temperature stability: ±0.4°F over 4 hours
- Sleep onset improvement (n=3, crossover): -14.2 minutes vs standard mattress
- Deep sleep improvement: +8.4 percentage points

### Dexcom G8 Adhesion
- 15-day test across 6 participants
- All sensors adherent for full period with standard overlapping tape
- Partial adhesion failure in 2 participants who swam >45 min/day after day 12

## EDITORIAL INFORMATION

- All products purchased at retail or borrowed (noted in review)
- No payment accepted for reviews or rankings
- No advertiser relationships
- Reviews updated when firmware/software changes materially affect tested metrics
- Corrections published prominently: corrections@health-tech-reviews.com
- Privacy policy: https://health-tech-reviews.com/privacy-policy/
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