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Calorie Tracker Lab
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Yuki Nakamura, MS, BS

Data Analyst

About Yuki Nakamura

Yuki Nakamura is the lab’s quantitative spine. They write the test protocols, calculate the per-app statistics that anchor every published score, and own the mathematical framing of the lab’s flagship benchmarks. The lab’s standard claim — that a tracking app has a MAPE of 8.4% on the lab’s reference battery, with a 95% confidence interval of 6.1% to 10.7% — is the kind of statement that exists on the site because Yuki insisted it should.

Yuki trained as an applied mathematician at Berkeley and as a statistician at Stanford. Their MS thesis was on measurement-error models for patient-reported nutritional intake — exactly the problem domain that Calorie Tracker Lab evaluates, except inside an academic study rather than a consumer-app benchmark. Their pre-Lab career was three years at a healthcare-tech company building statistical models on noisy outcome data; they joined the Lab in September 2025 because Vincent’s pitch was, almost word for word, “the calorie-tracking app category is the largest applied-statistics problem in consumer software with no statistician working on it.”

Credentials in detail

Editorial focus

Yuki owns: the test-protocol architecture (jointly with Vincent); the MAPE calculation methodology and its publication; the confidence-interval and sample-size standards across the site; the data-visualization style guide; and the statistical review of every published benchmark. They co-author the methodology page alongside Vincent and are the gating reviewer on any numerical claim.

Conflicts of interest

Yuki has no financial relationships with calorie tracking app companies. They hold no equity in or receive honoraria from any app reviewed on this site. They maintain no affiliate accounts. Their income is derived solely from this publication. They have never received fees from any company whose product is reviewed here.

Recent Work

Articles

App Reviews

Comparisons