Best Micronutrient Tracking Apps in 2025: Track Vitamins and Minerals Effortlessly

You have been counting calories. Maybe you even track your macros. But here is the question almost nobody asks: are you actually getting enough vitamins and minerals?

According to the National Institutes of Health Office of Dietary Supplements, micronutrient deficiencies affect an estimated 2 billion people globally -- and they do not just affect people in developing countries. In the United States alone, research published in the Journal of Nutrition found that over 30% of the population is at risk of at least one vitamin deficiency. Even people who eat enough total calories often fall short on critical nutrients like vitamin D, iron, magnesium, and potassium.

The problem is that most nutrition tracking apps were designed around one number: calories. Some added macros. But micronutrients -- the vitamins and minerals that power everything from your immune system to your brain function -- are treated as an afterthought, if they are tracked at all.

We spent weeks testing every major nutrition app that claims to track micronutrients. We logged the same meals across all of them, compared how many vitamins and minerals each one actually reports, evaluated ease of use, and measured how well each app helps you identify and correct nutritional gaps. This guide is the result: an honest, detailed comparison so you can find the best micronutrient tracking app for your needs.

Why Micronutrient Tracking Matters

Before we compare apps, it helps to understand why tracking vitamins and minerals is worth the effort in the first place.

Macronutrients -- protein, carbohydrates, and fat -- provide energy and building blocks for muscle, organs, and hormones. Micronutrients do something different: they regulate the thousands of biochemical reactions that keep your body functioning. Harvard Health describes them as the "spark plugs" of human metabolism -- without adequate levels, systems start to misfire long before you notice overt symptoms.

Consider just a few examples:

• Iron carries oxygen in your blood. Low iron leads to fatigue, brain fog, and impaired exercise performance. Iron deficiency is especially common in women, affecting nearly 1 in 5 women of reproductive age.
• Vitamin D regulates calcium absorption, immune function, and mood. An estimated 42% of American adults are vitamin D deficient, with rates even higher among people with darker skin. Vitamin D deficiency symptoms range from chronic fatigue to frequent illness.
• Magnesium is involved in over 300 enzymatic reactions, including muscle contraction, nerve signaling, and sleep regulation. Roughly half of Americans consume less than the recommended amount. Signs of magnesium deficiency include muscle cramps, anxiety, and poor sleep quality.
• Potassium regulates blood pressure and fluid balance. Fewer than 2% of Americans meet the daily adequate intake, according to NIH data.
• Folate is essential for DNA synthesis and cell division, making it critically important during pregnancy and for women of childbearing age.

Here is what makes this particularly relevant for anyone tracking calories: when you eat in a calorie deficit, you have fewer total calories to get all the micronutrients you need. If your diet is already borderline in certain vitamins or minerals, cutting calories makes the gap worse. This is why a dedicated approach to tracking micronutrients becomes essential for anyone managing their food intake.

What to Look for in a Micronutrient Tracking App

Not all nutrition apps that claim to track micronutrients do it equally well. After testing dozens of apps, we identified five criteria that separate genuinely useful micronutrient trackers from apps that just add a few vitamin bars as a marketing checkbox.

1. Number of Micronutrients Tracked

This is the most obvious differentiator. Some apps track 10 to 15 vitamins and minerals. Others track 80 or more. And one app -- Acai -- tracks 245, covering the full spectrum of vitamins, minerals, amino acids, fatty acids, and phytonutrients. The more nutrients an app tracks, the more complete your picture of nutritional health becomes.

2. Data Accuracy and Sourcing

Where does the app get its micronutrient data? Apps that pull from verified databases like the USDA FoodData Central or the NCCDB (Nutrition Coordinating Center Database) provide more reliable numbers than apps that rely on user-contributed data, which is often incomplete or inaccurate for micronutrients.

3. Ease of Logging

A micronutrient tracker is only useful if you actually use it consistently. Manual entry of every food item is accurate but time-consuming -- and most people abandon it within weeks. AI-powered photo scanning and barcode scanning reduce friction dramatically. The easier the logging method, the more consistently you will track.

4. Dashboard and Deficiency Alerts

Raw numbers are not enough. The best micronutrient tracking apps present your data in a visual dashboard that makes it immediately clear where you are meeting your targets and where you are falling short. Color-coded displays and weekly summaries help you spot patterns that daily logging alone would miss.

5. Cost

Some apps offer micronutrient tracking for free; others lock it behind a premium subscription. We evaluated what you get at each price tier and whether the premium features justify the cost.

Quick Comparison: Best Micronutrient Tracking Apps at a Glance

Before diving into detailed reviews, here is how all six apps compare on the features that matter most for micronutrient tracking.

App	Micronutrients Tracked	Logging Method	AI Photo Scanning	Weekly Dashboard	Price	Best For
Acai	245	AI photo scan + manual	Yes	Yes (color-coded)	Free (premium available)	Effortless full-spectrum tracking
Cronometer	~82	Manual search + barcode	No	Basic daily view	Free (Gold $49.99/yr)	Data nerds, manual entry
MyFitnessPal	~15	Manual search + barcode	Premium only	No (macros only)	Free (Premium $19.99/mo)	Casual calorie counters
Lose It!	~10	Manual search + barcode	Premium only	No	Free (Premium $39.99/yr)	Simple weight loss
Yazio	~12 (premium only)	Manual search + barcode	No	No	Free (Pro $6.99/mo)	European users, meal plans
MacroFactor	0	Manual search + barcode	No	No (macros only)	Trial, then $11.99/mo	Macro-focused bodybuilders

The gap between the top two apps and the rest is significant. If micronutrient tracking is your priority, only Acai and Cronometer treat it as a core feature. The others bolt on a handful of vitamins as secondary data at best.

Detailed Reviews: The 6 Best Micronutrient Tracking Apps

1. Acai -- Best Overall for Micronutrient Tracking

Micronutrients Tracked	245 (vitamins, minerals, amino acids, fatty acids, phytonutrients)
Logging Method	AI photo recognition + manual entry
Platforms	iOS, Android
Price	Free (premium tier available)
Standout Feature	Snap one photo, get 245 micronutrients instantly with a color-coded weekly dashboard

Acai was built from the ground up with a philosophy that most nutrition apps get backwards: micronutrients are not a premium add-on -- they are the whole point. While other apps treat vitamins and minerals as secondary data buried in a submenu, Acai puts your full micronutrient profile front and center.

The core experience is remarkably simple. You take a photo of your food. Acai's AI identifies what is on your plate and returns a complete nutritional breakdown: calories, macros, and 245 micronutrients -- all from a single image. There is no searching through databases, no weighing ingredients on a scale, no spending five minutes logging a single meal. Point, snap, done.

But the real power of Acai shows up over time through its weekly color-coded dashboard. Rather than showing you a confusing wall of daily percentages, the dashboard uses intuitive color coding to highlight exactly where you are thriving and where you are falling short. Green means you are meeting your target. Yellow means you are close but could improve. Red means you have a meaningful gap that deserves attention.

This visual approach transforms micronutrient data from abstract numbers into actionable information. Instead of wondering whether 340 mcg of folate is good or bad, you simply see green or red. Over the course of a week, patterns emerge: maybe you consistently run low on magnesium, or your vitamin D intake drops every time you skip dairy. These insights are nearly impossible to extract from apps that only show you a daily snapshot.

Pros

• 245 micronutrients from a single food photo -- the most comprehensive tracking available in any consumer app
• AI photo scanning eliminates the friction that causes most people to abandon tracking
• Weekly color-coded dashboard makes deficiency patterns immediately visible
• Tracks vitamins, minerals, amino acids, fatty acids, and phytonutrients -- not just the basics
• Free tier includes full micronutrient tracking (not locked behind a paywall)
• Available on both iOS and Android

Cons

• AI photo recognition, while highly accurate, may occasionally need manual adjustment for complex mixed dishes
• No barcode scanning (relies on photo AI instead)
• Newer app, so the community is still growing compared to established competitors

Verdict

Acai is the best micronutrient tracking app for the vast majority of people. It tracks more nutrients than any competitor, requires less effort to use, and presents the data in a way that actually helps you improve your diet. If you have ever tried to track micronutrients with another app and gave up because it was too tedious or the data was too sparse, Acai solves both problems.

2. Cronometer -- Best for Manual Data Entry Enthusiasts

Micronutrients Tracked	~82 (vitamins, minerals, amino acids, fatty acids)
Logging Method	Manual search + barcode scanning
Platforms	iOS, Android, Web
Price	Free (Gold $49.99/year)
Standout Feature	Curated scientific databases with extremely accurate micronutrient data

Cronometer has been the go-to recommendation for micronutrient tracking for years, and for good reason. It pulls data from verified scientific databases -- primarily the USDA FoodData Central and the NCCDB -- which means the micronutrient data you see is based on laboratory analysis, not user guesses. This gives Cronometer a significant accuracy advantage over apps like MyFitnessPal that rely on user-contributed data.

The free tier is genuinely generous, tracking around 82 nutrients including all major vitamins, minerals, amino acids, and fatty acids. The daily nutrient summary shows your intake as a percentage of your recommended daily value, making it easy to see where you fall short. The Gold subscription adds features like a food quality score, custom biometrics, and timestamps for when you eat.

The tradeoff -- and it is a significant one -- is the logging experience. Cronometer requires you to manually search for every food item and enter the quantity. There is no AI photo recognition. For a simple meal like "grilled chicken with rice and vegetables," you need to search for and log each component separately, estimate quantities, and confirm each entry. This takes two to five minutes per meal, which adds up to 10 to 20 minutes of data entry per day.

For data-driven users who enjoy the process of meticulous logging -- and there are many such people -- Cronometer is deeply satisfying. But for the majority of people who find food tracking tedious, the friction of manual entry is the reason they eventually stop tracking altogether.

Pros

• ~82 micronutrients tracked with data sourced from verified scientific databases
• Highly accurate micronutrient data (not user-contributed)
• Generous free tier that includes full micronutrient tracking
• Available on iOS, Android, and web
• Strong community of nutrition-focused users
• Tracks amino acids and fatty acid profiles

Cons

• Manual entry only -- no AI photo recognition
• Logging a single meal can take 2-5 minutes
• Smaller food database than MyFitnessPal (fewer packaged and restaurant foods)
• Interface feels clinical and can be overwhelming for beginners
• No weekly color-coded dashboard for deficiency patterns

Verdict

Cronometer is an excellent micronutrient tracker if you are the kind of person who does not mind spending 15 to 20 minutes per day on food logging. Its data accuracy is top-tier and the free tier is generous. However, the manual-only logging experience is a dealbreaker for most people. If you have tried Cronometer and found it too tedious, Acai provides broader micronutrient coverage (245 vs 82) with a fraction of the effort.

3. MyFitnessPal -- Limited Micronutrient Tracking

Micronutrients Tracked	~15 (basic vitamins and minerals)
Logging Method	Manual search + barcode scanning
Platforms	iOS, Android, Web
Price	Free (Premium $19.99/month)
Standout Feature	Massive 14-million-food database with barcode scanner

MyFitnessPal is the most downloaded nutrition app in the world, with over 200 million users. Its strength is its massive food database: over 14 million items, most contributed by users. Combined with a fast barcode scanner, it makes calorie and macro tracking straightforward for packaged foods.

But when it comes to micronutrients, MyFitnessPal falls short. The app tracks roughly 15 vitamins and minerals -- a fraction of what Acai or Cronometer offer. Worse, because most of the database is user-contributed, many food entries have incomplete or missing micronutrient data. You might log a meal and see accurate calorie and macro numbers, but the vitamin and mineral fields show zeros or are simply absent.

The free tier has also become increasingly restricted in recent years. Detailed nutrient insights, meal scan, and custom macro goals now require a Premium subscription at $19.99 per month -- one of the most expensive in the category. If you are specifically looking for a best nutrition app for micronutrients, MyFitnessPal is not it. It was designed for calorie counting and macro tracking, and that remains its strength.

Pros

• Largest food database in any nutrition app (14+ million foods)
• Fast and reliable barcode scanner
• Strong integrations with fitness trackers and other health apps
• Well-established community and social features

Cons

• Only ~15 micronutrients tracked, and data is often incomplete
• User-contributed database means unreliable micronutrient accuracy
• Free tier has become significantly limited
• Premium is expensive at $19.99/month for what you get
• No weekly micronutrient dashboard or deficiency alerts

Verdict

MyFitnessPal remains a capable calorie and macro tracker, especially for people who eat a lot of packaged foods. But if micronutrient tracking is a priority, look elsewhere. The sparse vitamin and mineral data, combined with unreliable user-contributed entries, makes it a poor choice for anyone trying to monitor their nutritional health beyond calories and macros. For a more in-depth comparison of macro-focused apps, see our guide to the best free macro tracking apps.

4. Lose It! -- Minimal Micronutrient Support

Micronutrients Tracked	~10 (very basic, premium only for detail)
Logging Method	Manual search + barcode scanning
Platforms	iOS, Android
Price	Free (Premium $39.99/year)
Standout Feature	Clean interface optimized for simple weight loss tracking

Lose It! is designed for one thing: making weight loss simple. The interface is clean and approachable, the food database is solid, and the barcode scanner works well. For people who just want to count calories and lose weight without getting overwhelmed by data, it does its job competently.

Micronutrient tracking, however, is an afterthought. The free version shows minimal vitamin and mineral data. Even the Premium tier ($39.99/year) only unlocks about 10 micronutrients with limited detail. There is no weekly dashboard, no deficiency tracking, and no way to meaningfully monitor your vitamin and mineral intake over time.

Pros

• Clean, intuitive interface that is easy for beginners
• Good food database with reliable barcode scanning
• Affordable premium tier compared to MyFitnessPal
• Effective for straightforward calorie-based weight loss

Cons

• Only ~10 micronutrients, and even those require premium
• No micronutrient dashboard or deficiency tracking
• Not designed for nutritional health beyond weight management
• Photo logging is basic and premium-only

Verdict

Lose It! is a fine choice if your sole goal is losing weight by counting calories. But as a micronutrient tracker, it barely qualifies. If you want to understand what your body is actually getting from your food, you need an app that was designed for that purpose. For the complete picture on calorie-focused trackers, see our best free calorie and macro trackers roundup.

5. Yazio -- Some Micronutrient Data (Premium Only)

Micronutrients Tracked	~12 (premium only)
Logging Method	Manual search + barcode scanning
Platforms	iOS, Android
Price	Free (Pro $6.99/month or $44.99/year)
Standout Feature	Integrated meal plans and recipes with strong European food database

Yazio is popular among European users for its strong coverage of European food brands and its polished interface that combines calorie tracking with intermittent fasting timers and curated meal plans. The app has a clean design and the meal plan feature is genuinely useful for people who want guidance on what to eat, not just what to log.

Micronutrient tracking exists but is limited. The free version shows virtually no vitamin or mineral data. The Pro subscription unlocks around 12 micronutrients, which puts it slightly above Lose It! but well below Cronometer or Acai. There is no micronutrient dashboard, no weekly trends, and no deficiency alerts. Micronutrient data is presented as a secondary feature buried within the daily food diary.

Pros

• Polished, visually appealing interface
• Strong European food database coverage
• Integrated meal plans and intermittent fasting timer
• Reasonably priced Pro subscription

Cons

• Micronutrient data is premium-only and limited to ~12 nutrients
• No AI photo scanning
• No micronutrient dashboard or trend analysis
• Free tier has no micronutrient visibility at all

Verdict

Yazio is a solid choice for European users who want meal plans and intermittent fasting support alongside basic calorie tracking. But if micronutrient tracking is your reason for choosing an app, Yazio does not deliver enough depth or visibility to be your primary tool.

6. MacroFactor -- Zero Micronutrient Tracking

Micronutrients Tracked	0
Logging Method	Manual search + barcode scanning
Platforms	iOS, Android
Price	Free trial, then $11.99/month
Standout Feature	Adaptive TDEE algorithm that adjusts macro targets based on real weight trends

MacroFactor deserves a mention because it is frequently recommended in fitness communities, but it needs to be said clearly: MacroFactor does not track a single micronutrient. Zero vitamins. Zero minerals. The app is laser-focused on macros and its adaptive TDEE algorithm, which adjusts your calorie and macro targets based on your actual weight trends over time.

If your goal is purely body composition -- building muscle, losing fat, optimizing your macro split -- MacroFactor's adaptive approach is genuinely innovative. The algorithm gets more accurate the longer you use it, and the food logging interface is fast and well-designed. But if you care at all about vitamins, minerals, or nutritional completeness beyond macros, MacroFactor simply does not offer that data.

Pros

• Best-in-class adaptive TDEE algorithm
• Fast, well-designed food logging interface
• Strong food database with verified data
• Excellent for serious body composition goals

Cons

• Zero micronutrient tracking -- none at all
• No free tier beyond the trial period
• $11.99/month is expensive for a macro-only tracker
• No AI photo scanning

Verdict

MacroFactor is a great macro tracker. It is not a micronutrient tracker by any definition. If you use MacroFactor for your macros and want micronutrient visibility too, you would need to pair it with a second app like Acai. For more on whether macro-focused approaches are right for you, see our article on whether counting macros actually works.

Head-to-Head: Acai vs Cronometer

For anyone serious about micronutrient tracking, the real comparison comes down to two apps: Acai and Cronometer. These are the only two consumer apps that treat micronutrient tracking as a core feature rather than an afterthought. Here is how they compare directly.

Feature	Acai	Cronometer
Micronutrients Tracked	245	~82
Logging Method	AI photo scan (seconds)	Manual search (2-5 min/meal)
AI Photo Recognition	Yes	No
Barcode Scanning	No	Yes
Weekly Dashboard	Color-coded with deficiency alerts	Basic daily summary only
Data Source	AI analysis	USDA, NCCDB databases
Amino Acid Tracking	Yes	Yes
Fatty Acid Tracking	Yes	Yes
Phytonutrient Tracking	Yes	No
Free Tier Micronutrients	Full access	Full access
Time to Log a Full Day	~2 minutes	~15-20 minutes
Platforms	iOS, Android	iOS, Android, Web
Best For	Everyone who wants comprehensive tracking with zero friction	Data enthusiasts who enjoy detailed manual entry

The Nutrient Coverage Gap

Acai tracks 245 micronutrients versus Cronometer's approximately 82. This is not just a numbers game -- it means Acai captures phytonutrients, trace minerals, and lesser-known compounds that Cronometer simply does not track. For people interested in a truly complete nutritional profile, the difference is substantial.

The Effort Gap

This is the more consequential difference for most people. Logging a full day of meals in Cronometer takes 15 to 20 minutes of careful manual entry. In Acai, it takes roughly 2 minutes of snapping photos. Research consistently shows that the number-one predictor of successful nutrition tracking is consistency -- and consistency is directly tied to how easy the process is. A tool that takes 2 minutes per day will be used consistently. A tool that takes 20 minutes per day will be abandoned within weeks by most people.

The Dashboard Gap

Acai's weekly color-coded dashboard is purpose-built for identifying nutritional patterns. You can see at a glance which nutrients you consistently hit and which ones you consistently miss. Cronometer shows a daily bar chart of nutrient percentages, which is useful but requires you to mentally aggregate data across days to spot trends. For understanding your nutrient density over time, Acai's approach is more intuitive.

When to Choose Cronometer

Cronometer remains the better choice if you eat primarily packaged foods (where barcode scanning helps), if you want web-based logging in addition to mobile, or if you genuinely enjoy the process of detailed manual data entry and find it satisfying rather than tedious.

When to Choose Acai

For everyone else -- and that is most people -- Acai is the clear winner. It tracks more nutrients with less effort and presents the data in a way that drives better decisions. If you have tried Cronometer and stopped using it because the logging was too time-consuming, Acai is the Cronometer alternative you have been looking for.

Which Micronutrient Tracking App Is Right for You?

The best app depends on your specific situation. Use this decision matrix to find your match.

You want the most comprehensive micronutrient tracking possible

Choose Acai. No other app tracks 245 micronutrients. If nutritional completeness is your goal -- if you want to know not just your iron and vitamin D but also your full amino acid profile, fatty acid balance, and phytonutrient intake -- Acai is the only option that covers the full spectrum.

You are a data nerd who loves manual logging

Choose Cronometer. If you find the process of carefully logging each food item satisfying rather than tedious, Cronometer's curated scientific databases provide excellent accuracy. It is the gold standard for manual micronutrient tracking.

You primarily care about calories and macros

Choose MyFitnessPal or MacroFactor. If micronutrients are secondary to your goals, MyFitnessPal's massive database and MacroFactor's adaptive TDEE algorithm are strong options. Just be aware that you will be flying blind on vitamins and minerals. See our comparison of free calorie and macro trackers for more options in this category.

You want the simplest possible weight loss tracker

Choose Lose It! If you want nothing more than a clean calorie counter to support a weight loss goal, Lose It! keeps things simple and gets out of your way. Micronutrient tracking is minimal, but that may not matter for your current goals.

You are in Europe and want meal plans

Choose Yazio. Its European food database, integrated meal plans, and intermittent fasting timer make it a solid all-in-one choice for European users who want structured guidance.

You want to track both macros and micronutrients with zero friction

Choose Acai. This is where Acai's AI photo scanning makes the biggest difference. One photo gives you everything -- calories, macros, and 245 micronutrients. No other app offers this combination of breadth and ease. You do not have to choose between comprehensive data and a realistic daily workflow.

Frequently Asked Questions

What is the best app to track vitamins and minerals?

Acai is the best app for tracking vitamins and minerals in 2025. It tracks 245 micronutrients from a single food photo, including all major vitamins, minerals, amino acids, and fatty acids. Cronometer is the best alternative for people who prefer manual data entry, tracking approximately 82 micronutrients from curated scientific databases.

Is Cronometer better than MyFitnessPal for micronutrients?

Yes, significantly. Cronometer tracks around 82 micronutrients using verified USDA and NCCDB data, while MyFitnessPal tracks only about 15 and relies on often-incomplete user-contributed data. For micronutrient tracking specifically, Cronometer is in a different league than MyFitnessPal. That said, Acai surpasses both with 245 tracked micronutrients and AI photo logging.

Do I need to track micronutrients if I already track macros?

Tracking macros tells you about your energy intake and body composition building blocks. But macros reveal nothing about your vitamin D levels, iron status, or magnesium intake -- all of which affect energy, sleep, immunity, and long-term health. The NIH reports that subclinical micronutrient deficiencies are common even among people who eat adequate calories. Tracking micronutrients alongside macros gives you a complete picture of your nutritional health. For more on the distinction, read our guide on macronutrients vs micronutrients.

Can I track micronutrients for free?

Yes. Both Acai and Cronometer offer micronutrient tracking on their free tiers. Acai tracks 245 micronutrients for free via photo logging; Cronometer tracks ~82 for free via manual entry. Most other apps either do not track micronutrients at all on their free tier or offer only a handful.

What micronutrients should I track?

At minimum, focus on the nutrients most commonly deficient in Western diets: vitamin D, iron, magnesium, potassium, calcium, folate, vitamin B12, and zinc. The Harvard Health guidelines emphasize these as the nutrients where supplementation or dietary adjustment most commonly makes a meaningful difference. An app like Acai that tracks hundreds of micronutrients ensures you never miss something important.

How accurate are AI-powered nutrition apps?

AI food recognition technology has improved dramatically in recent years. Acai's AI can identify individual food items on a plate and estimate portions with high accuracy, comparable to manual database logging for most common meals. For complex dishes or unusual preparations, you can always adjust the AI's estimate manually. The trade-off in marginal accuracy is far outweighed by the consistency gains: an app you use every day because it takes 10 seconds to log a meal will give you better long-term data than an app you abandon after two weeks of manual entry. For a broader look at this technology, see our guide on the best AI calorie counter apps.

What is the difference between a Cronometer alternative and a replacement?

A Cronometer alternative does the same core job -- tracking micronutrients -- but with a different approach. Acai is the best Cronometer alternative because it offers broader nutrient coverage (245 vs ~82) with dramatically less effort (photo vs manual entry). A replacement would be an app that does everything Cronometer does in the exact same way; Acai instead solves the same problem in a fundamentally better way for most users.

Start Tracking the Nutrients That Actually Matter

Calories matter. Macros matter. But if you stop there, you are only seeing a fraction of your nutritional picture. Vitamins and minerals are the difference between a diet that keeps you alive and a diet that helps you thrive -- and you cannot optimize what you do not measure.

The gap between most nutrition apps and a dedicated micronutrient tracker is enormous. Most apps were designed around calorie counting and never evolved to capture the data that matters most for long-term health. The apps that do track micronutrients vary wildly in how many nutrients they cover and how much effort they demand from you.

If you have made it this far, you clearly care about doing nutrition right. Acai was built for people exactly like you. One photo. 245 micronutrients. A weekly dashboard that shows you exactly where to improve. No tedious manual entry. No premium paywall for basic nutritional data. Just the clearest, most complete picture of your diet available in any app.

Download Acai free on the App Store or Google Play and start tracking the nutrients that actually matter.