Our experts · Updated 2026

Who writes and reviews the fitness apps on Fitness Tracking Guide?

Every ranking and every individual app review on this site has a named author and a named peer reviewer — a registered dietitian, a board-certified physician, a sleep-medicine PhD, or a certified strength coach with documented credentials. Nothing on this site is anonymous, and nothing is AI-generated without review.

Portrait of Daniel Vance

Daniel Vance

Editor-in-Chief
MS, Health Informatics · Former product lead, digital-health platform

Daniel is the founding editor-in-chief of Fitness Tracking Guide and the author of the [methodology page (v3.1)](/methodology/) that scores every app we publish on. He spent six years as a product lead at a Series B digi…

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Portrait of Dr. Anika Chandra

Dr. Anika Chandra

Sleep Science Editor
PhD, Behavioral Sleep Medicine · Diplomate, American Board of Sleep Medicine (Behavioral) · CBT-I Certified

Anika runs the sleep desk and authored our 128-night polysomnography reference protocol — the test set that lets us say, with a straight face, that one wearable's sleep-stage detection actually beats another's. Before jo…

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Portrait of Dr. Camille Boucher

Dr. Camille Boucher

Women's Health Editor
MD · Board-certified OB/GYN · NAMS Certified Menopause Practitioner

Camille leads the women's health category. She designed the cycle-tracking test protocol — 4 reviewers, minimum 4 cycles each, scored against ovulation-confirmation gold standards — and she is the reason cycle reviews on…

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Portrait of Dr. Maya Ostrowski

Dr. Maya Ostrowski

Head of Nutrition Research
PhD, Nutritional Sciences · RD (Registered Dietitian) · CNSC

Maya leads the nutrition research desk at Fitness Tracking Guide. She designed the 16-week, 127-reviewer adherence cohort that anchors our nutrition and weight-loss rankings, and she personally weighs every reference mea…

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Portrait of Hana Yamamoto

Hana Yamamoto

Mindfulness & Behavior-Change Editor
MA, Clinical Psychology · MBSR-Certified Teacher · ACT Therapist (Provisional)

Hana leads the meditation, mindfulness and behavior-change desk. She designed the 45+ day, 4-reviewer protocol that sits behind our meditation reviews, and she pays particular attention to whether an app's content reflec…

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Portrait of Lena Hofstetter

Lena Hofstetter

Fasting & Metabolic Health Editor
RD (Registered Dietitian) · MS, Human Nutrition & Metabolism · CDCES (Certified Diabetes Care and Education Specialist)

Lena leads our fasting and metabolic-health coverage. She designed the 14-week / 6-reviewer fasting cohort that compared 16:8, 18:6 and 24h protocols against a continuous-glucose-monitor reference, and she is the reason …

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Portrait of Marcus Whitfield

Marcus Whitfield

Senior Running & Endurance Editor
NSCA-CSCS · USATF Level 2 Endurance Coach · MS, Exercise Science

Marcus leads the running, cycling and endurance category at Fitness Tracking Guide. He coaches a London-based amateur marathon group and has personally run 14 marathons and three ultras, which is convenient: every runnin…

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Portrait of Tomás Reyes

Tomás Reyes

Strength & Hypertrophy Editor
NSCA-CSCS · USAW Level 1 · MS, Exercise Physiology

Tomás leads the strength-training and hypertrophy desk. He ran the 15-week, 6-reviewer programmed-lifting cohort that anchors our [workout ranking](/workout/) — a multi-protocol study across linear progression, RPE-autor…

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