Best 7 Nutrient Tracker Apps in 2026

Introduction

Protein & Iron Tracker is for people who want a few specific nutrients, protein, fiber and iron, without a full calorie-counting diary. For wide micronutrient coverage, Cronometer and MyNetDiary go much deeper. This list covers seven apps, from focused trackers to full nutrition diaries.

Quick comparison table

Check each store listing for current subscription pricing.

1. Protein & Iron Tracker

Best for: people who want to track protein, fiber and iron, one, two or all three.

Protein targets come from your body weight and goal, fiber and iron targets from your age and sex, or you type your own. Log from a searchable food collection with a filter for each nutrient, and one log fills in every nutrient you track. Daily rings and a weekly calendar show how close you are.

The free tier lets you log up to 3 foods a day. Pro removes that limit and adds photo, barcode and voice logging, which use AI and need an internet connection. The food log stays on your device, with no account and no ads. It is iPhone and iPad only, and it is not a full micronutrient tracker. It is a tracking tool, not medical or dietary advice.

Nutrient guides: protein, iron and fiber. Protein & Iron Tracker on the App Store.

2. Cronometer

Best for: the deepest micronutrient detail.

Cronometer tracks calories, macros, fasting and 95+ vitamins and minerals, built on a curated database of verified foods. That depth is a lot if you only want a quick daily check.

3. MyNetDiary

Best for: nutrient detail with fast logging.

Its listing describes a staff-verified database with up to 108 nutrients per entry, a free barcode scanner and photo-based Meal Scan. It sits between a calorie counter and Cronometer.

4. MyFitnessPal

Best for: a huge food database and a familiar diary.

MyFitnessPal tracks calories, macros and food with a very large database, plus an AI coach. Nutrient depth is thinner than the specialist apps.

5. Lose It!

Best for: beginners who want simple calorie goals.

Lose It! sets a calorie budget and tracks food, exercise, macros and protein. It stays closer to weight goals than to micronutrients.

6. MacroFactor

Best for: people who want adaptive calorie and macro targets.

MacroFactor adjusts your targets with weekly check-ins and estimates your expenditure from your logs and weight. It centers on macros and weight trends rather than micronutrients.

7. Yazio

Best for: calorie tracking with fasting.

Yazio is an AI calorie tracker with an intermittent fasting timer. It is an all-in-one weight app, not a nutrient-first tracker.

Frequently asked questions

What is the best nutrient tracker app?

It depends on scope. Cronometer covers the most nutrients. Protein & Iron Tracker is a simpler choice if you only care about protein, fiber and iron.

Which app tracks the most micronutrients?

Cronometer lists 95+ vitamins and minerals, and MyNetDiary lists up to 108 nutrients per entry.

Do I need to track every nutrient?

No. Start with the one or two that matter to you.

Are there good options for Android?

Yes. Cronometer, MyNetDiary, MyFitnessPal, Lose It!, MacroFactor and Yazio all have Google Play listings.

The verdict

For a focused protein, fiber and iron log on iPhone, use Protein & Iron Tracker. For broad micronutrient tracking, choose Cronometer or MyNetDiary, which both work on iPhone and Android.