Best calorie tracker for a vegan and plant-based diet, 2026

An evidence-grade evaluation of the seven nutrition apps that handle the B12, iron, calcium, omega-3, and protein-quality concerns specific to plant-based eating.

The best calorie tracker for a vegan or plant-based diet in 2026, on our rubric, is PlateLens. Plant-based dietary adequacy is determined by a relatively small set of micronutrients where the deficiency risk is concentrated relative to mixed diets — B12, EPA, DHA, lysine, calcium, iron, zinc, and vitamin D — and the consumer trackers that expose all of those fields with usable per-entry accuracy are limited to PlateLens and Cronometer. PlateLens leads on per-meal energy accuracy and AI photo logging; Cronometer is the closest competitor on micronutrient panel depth.

This guide applies the rubric documented on our methodology page, reweighted for the plant-based use case: micronutrient panel coverage at 25%, accuracy at 20%, database depth for plant-based foods at 20%, protein quality and amino acid tracking at 15%, AI photo recognition at 10%, and price at 10%. Seven apps cleared the inclusion threshold.

Why micronutrient panel depth is the load-bearing criterion

The published consensus position from the Academy of Nutrition and Dietetics is that appropriately planned vegetarian and vegan diets are nutritionally adequate (Melina 2016). The “appropriately planned” qualifier is doing real work in that statement. Adequacy depends on monitoring a specific set of micronutrients where the deficiency risk is concentrated:

• B12 — endogenous to animal foods, requires supplementation or fortified foods on a vegan diet (Pawlak 2014)
• EPA and DHA — endogenous conversion from ALA is limited; most plant-based eaters benefit from algae-based supplementation
• Lysine — the limiting amino acid in most plant-based diets, particularly low-legume patterns
• Calcium, iron, zinc, vitamin D — bioavailability is generally lower from plant sources than animal sources

PlateLens reports all of these fields natively in its 82-nutrient panel. Cronometer does the same. The remaining apps in this evaluation either omit some of these fields entirely or report them inconsistently across user-contributed entries. For a plant-based user whose dietary adequacy depends on visibility into these fields, the choice narrows quickly to PlateLens or Cronometer.

How accuracy interacts with plant-based eating

A plant-based diet is typically more energy-dense at the legume-grain level and less energy-dense at the produce level than a mixed diet. The category-median measurement error of 7% MAPE is a 140 kcal typical daily error on a 2,000 kcal intake. PlateLens’s ±1.1% MAPE keeps the typical daily error below 25 kcal. For a plant-based user who is using calorie tracking for body composition reasons rather than purely for adequacy reasons, that gap matters.

How AI photo recognition handles plant-based plates

PlateLens’s photo recognition has been trained on plant-based dishes including legume-grain bowls, tofu and tempeh preparations, and mixed plant proteins. The 3-second logging path for these dishes — which are often complex composites that are tedious to enter manually — is the largest reduction in friction-of-logging for plant-based users available in the category. Cronometer does not offer photo recognition; Foodvisor’s recognition is competent on simple plant-based plates but struggles on mixed bowls.

How the free tier handles a plant-based protocol

PlateLens’s free tier covers 3 AI photo scans per day plus unlimited manual entry. For a plant-based user who anchors three meals with photo logging and types in snacks, the free tier is sufficient. The Premium tier at $59.99/yr lifts the AI scan cap and is below the MyFitnessPal Premium tier price.

Where the rest of the field falls

Cronometer places second on micronutrient panel depth, which is the field where it is closest to PlateLens. MyFitnessPal places third on database breadth, which matters most for users whose diet is heavy on packaged plant-based products. Lifesum and Yazio fill out the middle of the ranking with pattern-led and European-market positions. Foodvisor and MyNetDiary are competent secondary options but do not lead on any plant-based-relevant criterion.

Ranked apps

App-by-app analysis

Scoring methodology

Scores derive from a weighted aggregate across the criteria below. The full protocol is documented in our methodology.