Guide · 2026

What is the best app to track iron and vitamin B12 intake on iPhone?

Short answer: Cronometer. Its free tier already tracks up to 95 nutrients against a verified food database, and its own pages name iron and vitamin B12. Micron names both on a 29-nutrient photo card. SnapCalorie claims 100+ micronutrients from a plate photo. An app log is not a blood test.

Updated October 6, 2026 · Written by LAYERTWO, the makers of NutriCam. We make NutriCam. The other apps on this page are not ours, and we say where they are the better pick.

Download NutriCam on the App Store Read what NutriCam is

How this list was made

Four questions, answered only from each app’s own website, help center, or App Store listing on October 6, 2026:

Is there a live iPhone listing?
Do its own pages name iron and vitamin B12, or claim a micronutrient panel of vitamins and minerals?
Is the log a verified diary, a plate photo, or both?
What does it cost where the provider states a price and a billing period?

Five apps meet that bar. Cal AI’s own website and App Store listing name calories, protein, carbs, and fat. MyFitnessPal’s Premium page we read does not name vitamin B12. Lose It’s listing puts vitamins and minerals on Premium without naming iron or B12. We did not weigh meals or run blood tests, so nothing here is an accuracy ranking or a medical ranking.

Apps that track iron and vitamin B12 on iPhone

App	Best for	Iron and B12 on its own pages	How you log	Platforms	Price
Cronometer	Verified diary of iron and B12	Gold page: up to 95 nutrients; Oracle names iron. Data Confidence article names vitamin B12	Search and barcode on the free tier. Photo Log is Gold	iPhone, Android, web	Free tier. Gold $10.99 a month or $59.99 a year (Gold page, October 6, 2026)
Micron	Named iron and B12 from a plate photo	Tracker page lists iron and vitamin B12 among 29 nutrients	Photo, barcode, or search. FAQ: barcode the pack when you can	Site links App Store and Google Play. U.S. listing, October 6, 2026, says iPhone only	Free download. App Store lists Premium Monthly $8.99 and Premium Yearly $34.99 to $49.99 (October 6, 2026)
MacroFactor	Iron and B12 plus weekly calorie targets	Vs Cal AI page lists Iron and Vitamin B12 among 54 trackable items	Photo, barcode, and search, on the paid plan. Help: log common foods for micros	iPhone, Android	$11.99 a month or $71.99 a year. No free tier (App Store, October 6, 2026)
SnapCalorie	Standing free photo log with a claimed micro panel	Listing claims 100+ micronutrients, including vitamins, minerals, and amino acids. Does not name iron or B12	FAQ: free for up to 3 AI logs a day, then Premium	iPhone, Android	Premium $19.99 a month or $149 a year (U.S. App Store, October 6, 2026)
NutriCam	Photo card plus what to eat next	Listing names iron and vitamin B12	Default capture. Free tier included, with limits	iPhone only	Free download. Pro is $9.99 a month, or $34.99 to $49.99 a year (U.S. App Store, confirmed August 26, 2026)

Facts above come from each app’s own website, help center, or App Store listing on October 6, 2026. We did not weigh meals or draw blood, so nothing here is an accuracy ranking.

The five apps

1. Cronometer: best verified iron and B12 diary

Cronometer’s Gold page, read October 6, 2026, lists tracking up to 95 nutrients on the free tier, with a barcode scanner and custom micronutrient targets. Oracle Nutrient Search names iron. A Data Confidence article names vitamin B12 in nutrition scores. Photo Log is Gold only ($10.99 a month or $59.99 a year). The photo is a search into NCCDB and CFCD. You still add oil and missed extras. Stay here if the iron or B12 number has to come from a verified entry you will edit. NutriCam vs Cronometer. Other photo-first options if the diary is the problem: Cronometer alternatives.

2. Micron: best named iron and B12 photo card

Micron’s tracker page, read October 6, 2026, lists 29 nutrients including iron and vitamin B12, with RDA tables for women and men. The site says you photograph a meal, scan a barcode, or search, then compare intake with personalized targets. Its FAQ says to barcode packaged food for the amounts on the label, to treat a restaurant photo as an overview, and that nothing replaces a blood test for an exact level. The FAQ also says micronutrient tracking is available from the first meal. The U.S. App Store listing that day says iPhone only and lists Premium Monthly $8.99 and Premium Yearly $34.99 to $49.99. The site also links Google Play.

3. MacroFactor: best if you also want weekly calorie targets

MacroFactor’s vs Cal AI page, read October 6, 2026, lists Iron and Vitamin B12 among 54 trackable items. Its micronutrient tracking article says US labels must report iron and usually omit B12, so you should log common foods, not barcodes, when the vitamin number matters. The App Store listing that day names a food tracker for macros and micronutrients, a 7-day trial, then $11.99 a month or $71.99 a year, with no free tier. Coaching adjusts calorie and macro targets. It does not name dinner. Other photo-log options if the algorithm is the problem: MacroFactor alternatives.

4. SnapCalorie: best standing free photo log

SnapCalorie’s App Store listing, read October 6, 2026, claims 100+ micronutrients including vitamins, minerals, and amino acids from USDA-backed foods. It does not name iron or vitamin B12 on that listing. Its FAQ says the app is free for up to 3 AI logs a day, and that oils when you eat out are an educated guess. Premium is $19.99 a month or $149 a year on the U.S. App Store that day. It is on iPhone and Android.

5. NutriCam: best for “what should I eat next?” on iPhone

NutriCam is our app, and it is iPhone only. The App Store listing names iron and vitamin B12. Photograph a meal or say what you ate, confirm the estimate, and see calories, macros, and vitamins and minerals. Then ask what to eat next from today’s log, targets, workouts, and Apple Health sleep when connected. Skip it if you need Android or a verified food database. What the app is: what is NutriCam. How the next-meal answer works: what should I eat next. Other photo apps, by job: best AI calorie tracker apps.

A food log is not a blood test

NIH ODS on iron, read October 6, 2026, says adult men need 8 mg a day and adult women 19–50 need 18 mg. Vegetarians who eat no meat, poultry, or seafood need almost twice as much, because nonheme iron from plants absorbs poorly. Vitamin C with the meal helps. Calcium can get in the way. An app adds the milligrams you logged. It does not know what you absorbed.

NIH ODS on vitamin B12, the same day, says plant foods have no B12 unless they are fortified. Adults need 2.4 mcg. Absorption needs stomach acid and intrinsic factor. People over 50, vegans, and people with pernicious anemia often cannot get enough from food alone. Manufacturers are not required to list B12 on a label when it occurs naturally.

That last point is why a barcode can read zero B12 on a food that has some. Cronometer’s Data Confidence article, read October 6, 2026, says branded foods often carry only the roughly 15 nutrients the label reports. MacroFactor’s micronutrient article says the same, and tells you to log common foods when you care about B12. Pick NCCDB or generic entries. Add the supplement if you take one.

Micron’s FAQ, read October 6, 2026, says nothing replaces a blood test if you need an exact level. None of these apps is a medical device. They do not diagnose iron deficiency or B12 deficiency. Confirm foods and portions. See a clinician if you need medical nutrition. Photo estimates miss oil and sauce. Kitchen tests of photo calorie apps ran low. Details: how accurate are AI photo calorie counting apps. Photo vitamin logs: which app tracks micronutrients from a photo.

Log the foods you already ate, then read iron and B12 against a verified diary entry if that number has to hold. NutriCam is an iPhone advisor: photograph a meal or say what you ate, confirm the estimate, and see vitamins and minerals such as iron and B12. It is not a blood test, not a medical device, and not on Android.

No app can measure a meal from a photo. A picture cannot show oil, sauces, hidden ingredients, or portion weight. Every number from every app on this page is an estimate until you correct the foods and portions. We have not run an accuracy test across these apps, so this page makes no accuracy ranking.

FAQ

Does Cronometer track iron and B12 on the free plan?

Yes. Cronometer's Gold page, read October 6, 2026, lists tracking up to 95 nutrients on the free tier, with a barcode scanner. Oracle Nutrient Search names iron. A Data Confidence article names vitamin B12. Photo Log is Gold, $10.99 a month or $59.99 a year. Use NCCDB entries, not labels, when B12 is the point.

Can a food photo measure iron or vitamin B12?

No. A camera cannot see iron or B12. Oil, sauce, fortification, and portion weight stay invisible. Cronometer Photo Log maps the picture onto NCCDB after you review it. Micron's FAQ, read October 6, 2026, says a barcode beats a photo, and a blood test is the exact level. Confirm foods and portions.

Why did my barcode scan show zero vitamin B12?

US labels are not required to list B12 when it occurs naturally, per NIH ODS, read October 6, 2026. Cronometer's Data Confidence article says branded foods often have only the nutrients on the pack. MacroFactor's micronutrient article says log common foods, not barcodes, when B12 matters. Pick a generic NCCDB entry.

I eat vegan. Which iPhone app should I use for iron and B12?

Cronometer. NIH ODS, read October 6, 2026, says plant foods have no B12 unless fortified, and vegetarians need almost twice the listed iron. Cronometer's free diary shows those nutrients against NCCDB. Log fortified foods and supplements. Micron names both nutrients on a photo card. A diary is still not a blood test.

Do these apps replace a ferritin or B12 blood test?

No. None of these apps is a medical device. They estimate intake from foods you log. NIH ODS, read October 6, 2026, says a clinician tests B12 in blood. Micron's FAQ says nothing replaces a blood test for an exact level. See a clinician if you need medical nutrition.

Which of these iron and B12 apps work on Android?

Cronometer, MacroFactor, and SnapCalorie are on Android. Micron's site links Google Play; the U.S. App Store listing, October 6, 2026, says iPhone only. NutriCam is iPhone only. If you need Android, skip NutriCam. Cronometer's free diary still tracks iron and B12 there.

Sources

Every fact about another app on this page comes from that app’s own site, help center, or store listing, checked October 6, 2026. Prices and features change. Check the live listing before you buy.