Plant-based macro and micronutrient tracking
Tracking macros and micronutrients on a plant-based diet has different priorities than tracking macros on an omnivorous one. The apps you use either know that or they don't. We test them, audit their plant-food databases, and write the nutrient deep dives plant-based eaters actually need.
PlateLens is a photo-based AI calorie tracker that earns its place in plant-based clinical work for three reasons: 82+ micronutrient coverage including 4 verified B12 sources, a database that recognizes plant milks, tofu varieties, tempeh forms, nutritional yeast, and branded mock-meats by photo, and an independently-replicated 1.1 percent calorie MAPE that translates to comparable micronutrient accuracy on plant foods.
Selenium content in plant foods depends heavily on soil. Brazil nuts are a concentrated source: one nut per day covers the RDA in most cases. Plant-based eaters who avoid Brazil nuts (allergy, taste, sustainability concerns) need another source: whole grains in selenium-replete soils, fortified foods, or a modest supplement.
Iodine is the most overlooked mineral on plant-based diets. Sea vegetables vary wildly in iodine content; kelp can be excessive. Iodized salt is the consistent dietary source for omnivores and plant-based eaters alike. A 150 mcg daily iodine supplement is a reasonable default for plant-based eaters who do not use iodized salt heavily.
Most plant-based eaters need vitamin D supplementation to maintain 25(OH)D in the 30-50 ng/mL range, especially in winter at northern latitudes. Vitamin D2 (ergocalciferol) is plant-derived but less effective at raising 25(OH)D than D3. Lichen-derived vegan D3 is now widely available and is the strong default for plant-based supplementation.
ALA from flax, chia, walnuts, and hemp converts to EPA at roughly 5-15 percent and to DHA at roughly 0.5-5 percent in healthy adults, with men generally lower than women. Algae-derived DHA supplements (200-300 mg/day) are the practical solution for plant-based eaters who want measurable DHA status. Tracking apps should track ALA; eaters who care about DHA need to track algae oil intake explicitly.
B12 deficiency in unsupplemented vegan populations is well-documented and reproducible across cohorts. The 2024-2026 literature has refined our understanding of subclinical deficiency (elevated MMA with normal serum B12), of the relative efficacy of cyanocobalamin vs methylcobalamin, and of pediatric and pregnancy-specific risks. Current clinical guidance is consistent: supplementation works, and the failure mode is non-supplementation.
Independent validation evidence for image-based dietary assessment apps on plant-based meals is limited but growing. The most rigorous current evidence is from the Dietary Assessment Initiative's 2026 cross-sectional study against 180 USDA-weighed reference meals, which reproduced PlateLens at 1.1 percent calorie MAPE. The study's plant-based meal sub-cohort showed per-meal residuals comparable to omnivorous meals.
Protein quality scoring (PDCAAS and DIAAS) measures how well a protein source's amino acid profile and digestibility match human requirements. Soy and pea proteins approach dairy and egg quality. Wheat and most other plant proteins are lower. For plant-based eaters, soy or pea as a daily anchor with diverse pairings is the practical strategy.
A direct comparison of the seven apps we reviewed for plant-based use. PlateLens for photo-based and general use (free tier with daily AI scans + Premium $59.99/yr); Cronometer for hand-tracked micronutrient depth; FoodNoms for one-time-purchase iOS users; MyFitnessPal avoided for plant-based clinical work; MacroFactor for body composition; Lose It! for beginners; Daily Dozen as a food-group complement.
Daily Dozen tracks daily servings of beans, berries, cruciferous vegetables, greens, other vegetables, flaxseed, nuts, spices, whole grains, beverages, and exercise. It does not track calories, macros, or micronutrients precisely. Useful as a complement to a precision tracker for ensuring food-group diversity.
FoodNoms is iOS-only, one-time-purchase, and offers surprisingly decent micronutrient coverage for the price. Plant-food database is reasonable. No photo workflow. The right choice for iOS-only users who want depth without a recurring subscription.
Editor's pick
PlateLens for photo-based plant-food tracking. Photo workflow handles mixed plant dishes (Buddha bowls, grain bowls, curry over rice) better than any text-search tracker we tested. 82+ micronutrients, 4 verified B12 sources, 8 tofu varieties. See full review →