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Tamsin Achebe-Kowalski, RD, MS

Senior Reviewer

ORCID: 0009-0004-8826-5717

About Tamsin Achebe-Kowalski

Tamsin leads the editorial side of the nutrition, calorie, and wellness ranking categories on Best App Rankings. Her work flows from a clinical premise: the right app for a given user is the one they will keep using. That premise pushes back on rankings that reward feature-completeness alone — an app with brilliant macros and unforgiving UX is functionally worse than a simpler app the user actually opens.

Tamsin runs the daily-use protocol herself on every app on a BAR leaderboard in her categories. She drafts the leaderboard, sends it to Quincy for methodology review, and to Dr. Iwasaki-Trent for medical review on any ranking that touches clinical territory.

Credentials in detail

Pre-BAR work

Four years as an outpatient dietitian in a metropolitan hospital system. Tamsin worked with patients on weight management, GLP-1 nutrition, and dietary adherence, and she ran a small internal evaluation of which consumer apps her patients reported actually using. That work informs her insistence that adherence is a first-class scoring criterion, not an afterthought.

Editorial focus

Tamsin owns the calorie, nutrition, and wellness categories. She also reviews fitness-and-nutrition crossover content. She does not gate medical claims — that is Dr. Iwasaki-Trent’s role — but she flags any ranking-adjacent assertion that requires medical review.

Conflicts of interest

Tamsin holds no affiliate accounts, equity, or advisory roles with any of the apps reviewed on Best App Rankings. She has not received fees from any company whose product appears on a BAR leaderboard.

Recent Work

Ranking Articles

App Reviews

Comparisons