About
About WearablesNutrition
Two people, too many watches, and a spreadsheet that eventually became a site.
WearablesNutrition is a small, enthusiast-run site covering how wearable devices and calorie-tracking apps actually work together. Two writers — Ryan Costello and Amelia Chen — neither of whom is a doctor or a dietitian. No sponsorships, no affiliate links, no free review hardware.
How the site started
The site grew out of a shared-doc spreadsheet Ryan started keeping in 2023 to track which calorie apps actually synced with which watches he was testing. The spreadsheet got long enough that it seemed worth turning into a website. A year later, Amelia joined to cover the sleep, HRV, and CGM side of the story — topics that kept being relevant and kept being outside Ryan's actual knowledge.
The masthead
Ryan Costello — Editor
Ryan runs about 40 miles a week, cycles, and has been paying too much attention to consumer heart-rate sensors since 2019. He writes the compatibility matrix, the wearable-specific rankings, and the accuracy explainers. He is not a doctor. He is not a registered dietitian. He is, on a good day, a reasonably careful tester who weighs his food and notices when a sync breaks.
Amelia Chen — Contributor
Amelia comes from consumer tech journalism. She writes the sleep-tech coverage, the Oura and Whoop guides, and the CGM integration piece. Her interest in wearables-plus-nutrition started when she got bored of pitches for "revolutionary" apps and wanted to understand what the underlying integrations actually did.
Editorial independence
WearablesNutrition does not take sponsorships, affiliate commissions, or paid placements. We buy the hardware we test (or we test hardware we already own). If we ever accepted anything else, we would disclose it in bold at the top of the piece. Full detail in our editorial standards.
What we cover — and what we don't
- We cover wrist-worn wearables, ring wearables, Vision Pro, CGMs, and the calorie-tracking apps that pair with them on iOS and Android.
- We don't cover clinical nutrition, meal planning in a therapeutic sense, eating disorder recovery, or anything that would require medical or dietetic credentials. That work belongs to professionals. We're not them.
- We don't cover supplements. Too much noise, too little signal.
Contact
Corrections, disagreements, tips: editors@wearablesnutrition.com. If you see an integration on the compatibility matrix that's wrong, please tell us and we'll verify and update.
— Ryan, for WearablesNutrition.