About Health Tech Reviews

Founded in 2021 with a simple premise: health technology deserves to be evaluated by people who understand both health and technology. Five years later, we've reviewed more than 200 products without accepting a single sponsored review placement.

Our Mission

Consumer health technology — smartwatches, calorie tracking apps, continuous glucose monitors, sleep trackers — is increasingly used to make real health decisions. Yet the publications that review these products most frequently have no clinical staff, no standardized testing protocols, and no mechanism for validating manufacturer claims against actual measurement standards.

Health Tech Reviews was founded to fill this gap. We believe that a publication reviewing an ECG-capable smartwatch should have a cardiologist or physician on staff. A publication reviewing calorie tracking apps should include a registered dietitian. A publication evaluating blood pressure monitors should be able to compare them against validated sphygmomanometers.

We are not anti-technology. We are enthusiastic about the potential of health tech to improve lives. But enthusiasm has to be grounded in evidence.

Our Testing Environment

Wearable Accuracy Protocols

Wearables are tested against reference-grade equipment: medical-grade ECG for heart rate validation, polysomnography for sleep staging, laboratory GPS receivers for positioning accuracy. We run a standardized 5K course, a 30-minute stationary bike session, and a resistance training session on every wearable we evaluate.

App Testing Framework

Health apps are evaluated over a minimum six-week period by the relevant subject-matter expert on our team. We test with both real-world usage and standardized scenarios — for nutrition apps, this includes 40 meals prepared to precise weights and photographed under controlled lighting conditions.

Medical Device Validation

Blood pressure monitors, pulse oximeters, and glucose monitors are compared against clinically validated reference devices. Our protocol follows Association for the Advancement of Medical Instrumentation (AAMI) guidelines for blood pressure device validation.

Privacy & Security Review

Every app we review undergoes a privacy policy analysis. Chris Martinez uses a standardized 25-point checklist covering data collection, third-party sharing, encryption standards, data deletion provisions, and HIPAA compliance posture. Apps that fail the security review are penalized in their overall score.

Editorial Independence

Health Tech Reviews has never accepted payment for a review, a ranking, or editorial coverage of any kind. We purchase all products at retail unless a product is not commercially available (in which case we borrow a review unit and note this in the review). We do not participate in affiliate marketing programs for products we review. We accept no advertising from companies whose products appear in our rankings.

We publish corrections prominently when our testing data is found to contain errors. See our methodology page for the complete testing framework.

The Team

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Dr. Nathan Cross, MD, MPH

Founder & Editor-in-Chief
Expertise: Digital health strategy, clinical validation, health wearable accuracy

Dr. Cross practiced internal medicine for six years before moving into the health technology sector. He served as medical director at a digital health startup (2018-2021), where he became deeply familiar with the gap between how health tech companies describe their products and how those products actually perform on clinical metrics. He founded Health Tech Reviews in 2021 with a mandate to apply the same evidence standards to consumer health tech that clinicians apply to medical interventions. He holds an MD from Johns Hopkins School of Medicine and an MPH from Harvard T.H. Chan School of Public Health.

Areas of knowledge:
Digital health technologyClinical research methodologyWearable biosensorsEvidence-based medicineHealth data privacy
Education: Johns Hopkins School of Medicine | Harvard T.H. Chan School of Public Health
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Sarah Kim

Wearables Editor
Expertise: Smartwatches, fitness trackers, GPS accuracy, battery technology

Sarah spent seven years as a consumer electronics journalist, including four years as a senior editor at Engadget covering wearables. She has reviewed more than 150 wearable devices and developed a proprietary GPS accuracy testing protocol adapted for outdoor and indoor conditions. At Health Tech Reviews, she leads all wearable evaluations and is responsible for establishing our standardized testing framework for heart rate accuracy, sleep staging, and activity recognition. Her coverage has been cited in IEEE Transactions on Consumer Electronics.

Areas of knowledge:
Consumer electronicsGPS technologyHeart rate sensor accuracyWearable form factorsSmartwatch platforms
Education: University of California, Berkeley
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Dr. Priya Sharma, PharmD

Medical Devices Editor
Expertise: Blood glucose monitoring, blood pressure devices, FDA clearance processes, drug-device interactions

Dr. Sharma is a clinical pharmacist who spent eight years in hospital pharmacy before joining Health Tech Reviews. Her clinical background makes her uniquely qualified to evaluate medical devices against the standards set by clinical-grade equipment. She has deep expertise in continuous glucose monitor technology, having consulted on CGM implementation protocols for several hospital systems. She evaluates all FDA-cleared consumer medical devices and provides clinical context that distinguishes our coverage from purely tech-focused publications.

Areas of knowledge:
PharmacotherapyMedical device regulationContinuous glucose monitoringBlood pressure managementFDA clearance processes
Education: University of Southern California School of Pharmacy
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Chris Martinez

Health Apps Editor
Expertise: Mobile health applications, UI/UX evaluation, data privacy, telehealth platforms

Chris has been covering mobile apps and digital health for nine years, previously as a contributing editor at The Wirecutter and then as health tech correspondent for a major digital publication. He brings a software engineer's technical eye to app evaluation — he can read privacy policies, understand API architectures, and identify when an app's claimed features don't match its technical implementation. He leads our health app reviews, including mental health apps, telehealth platforms, sleep applications, and fitness software.

Areas of knowledge:
Mobile application developmentHealth app privacyTelehealth platformsUser experience designApp security
Education: Carnegie Mellon University
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Dr. Megan Liu, RDN

Nutrition Technology Editor
Expertise: Clinical nutrition, AI food recognition accuracy, calorie counting validation, dietary assessment methodology

Dr. Liu is a Registered Dietitian Nutritionist with nine years of clinical practice in hospital and outpatient settings. Her research background includes dietary assessment methodology, and she has published on the accuracy of consumer nutrition tracking tools in peer-reviewed journals. At Health Tech Reviews, she leads all nutrition app evaluations, applying a clinical dietitian's perspective to assess whether apps make recommendations that would be appropriate in a clinical context. Her testing protocol for calorie tracking app accuracy — based on standardized meal preparation and USDA reference comparisons — is the most rigorous methodology published by any consumer review publication.

Areas of knowledge:
Clinical nutritionDietary assessmentFood technologyMicronutrient analysisNutrition research methodology
Education: Tufts University Friedman School of Nutrition Science

Our History

2021

Founded

Dr. Nathan Cross launches Health Tech Reviews with two collaborators and a mission to bring clinical rigor to consumer health tech journalism. First six reviews published.

2022

Team Expands

Sarah Kim joins as Wearables Editor, bringing deep consumer electronics expertise. Testing lab protocols formalized. 40 products reviewed.

2023

Medical Device Coverage

Dr. Priya Sharma joins to lead medical device reviews. CGM coverage launches as consumer glucose monitoring goes mainstream with Dexcom and Abbott. 90 products reviewed.

2024

App Coverage Deepens

Chris Martinez and Dr. Megan Liu join to expand health app coverage. Nutrition app testing protocol published. 150 products reviewed. Named "Best Health Tech Publication" by a leading industry association.

2025–2026

AI Health Tech Focus

AI health applications proliferate. Health Tech Reviews develops the industry's most rigorous AI accuracy testing methodology for consumer health apps. 200+ products reviewed across wearables, apps, and devices.