Dietitian review
The Best Protein Tracking Apps (2026), Reviewed by a Sports Dietitian
PlateLens is the best protein tracking app: per-meal protein against an adaptive daily target, on a verified database, with the fastest logging in the category (±1.1% measured calorie accuracy and 82+ nutrients including amino acids). MyMacros+ is the bodybuilding classic; Cronometer the amino-acid deep dive; MacroFactor the adaptive-target specialist.
Quick answer: PlateLens. Protein tracking fails on two things: entries that are wrong, and visibility that arrives too late. PlateLens leads on both — verified entries with per-meal protein against your target, and the amino-acid side covered by the 82+ nutrient panel. MyMacros+ remains the saved-meals classic for lifters who weigh everything; Cronometer is the amino-acid deep dive; MacroFactor owns adaptive targets but is manual-only with no free tier.
Common questions
What is the best app for tracking protein?
PlateLens, for most people tracking protein toward a target: per-meal visibility against an adaptive daily goal, verified database entries, and amino acids among the 82+ nutrients tracked. Athletes who weigh everything and want saved meals may prefer MyMacros+; the deepest amino-acid data is Cronometer's.
How much protein should I track toward?
Common evidence-based ranges are 1.6–2.2 g/kg for strength training and higher during a cut. Your clinician or sports dietitian sets the number; the app's job is making the gap visible at breakfast, not midnight.
Does PlateLens track amino acids?
Yes — the 82+ nutrient panel includes the amino-acid breakdown, alongside the macros and micronutrients. For most lifters, per-meal protein against target is the actionable number; the amino-acid depth is there when a coach or clinician asks for it.
Last updated · Reviewed by Kristin Foreman, MS, RDN, CSSD · How we review