Comparison

MacrosFirst vs Carbon

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MacrosFirst

This app intelligently tracks your calorie and macro intake, adapting your targets weekly based on your metabolism and weight trends. Log meals quickly using AI, barcode scanning, or by scanning nutrition labels. It also monitors over 57 nutrients, not just macros, to provide a comprehensive view of your health.

Highlights
  • Adaptive calorie and macro targets
  • AI-powered food logging
  • Barcode and nutrition label scanning
  • Track over 57 nutrients
  • Weight trend analysis
  • Apple Watch and widget support
Features
Read full description

MacrosFirst is the macro tracker that learns your metabolism. It calculates how many calories you really burn from your food log and weight trend, then updates your calorie and macro targets every week so you keep making progress toward your goal. Log meals in seconds with AI, a barcode scanner, and 4+ million verified foods. [ TARGETS THAT ADAPT TO YOU ] • Autopilot: MacrosFirst sets your calories, protein, carbs, and fat, then updates them in weekly check-ins. • Copilot: MacrosFirst sets your weekly calorie budget and you set the macros for each day of the week. • Manual: set your own targets for each day of the week, great for carb cycling or training and rest days. • Your pace is a percentage of body weight per week, so targets stay realistic as your weight changes. Built on validated, peer-reviewed models with guidance from a metabolism scientist formerly at the National Institutes of Health (NIH). [ LOG FOODS & MEALS IN SECONDS ] • Search 4+ million verified foods or scan a barcode. • Scan a nutrition label to add a new food without typing. • Daily Meals: set up your meal schedule once, including recurring foods, and it appears in your Journal every day. • Copy meals or whole days, save meals and recipes, or quick-add calories and macros. • Auto-calculate serving sizes to hit an exact macro target. • Count alcohol as carbs, fat, or both so calories and macros always line up. [ AI FOOD SEARCH ] • Describe a meal by voice or text, paste a recipe, or snap a photo. AI finds each food, even the cooking oil you can't see, and matches it to our verified database. [ 57 NUTRIENTS, NOT JUST MACROS ] • 28,000+ lab-tested Core Foods from the USDA and research databases, with data for up to 57 nutrients. • Track vitamins, minerals, fiber, and more against automatic targets based on your calorie target, age, and sex. • See which foods drive each nutrient with Top Sources. [ SEE YOUR REAL PROGRESS ] • Trend weight smooths out daily swings to show where you're really heading. • Track steps and water alongside your nutrition. [ LOG FROM ANYWHERE ] • Apple Watch app, Home and Lock Screen widgets, and Siri Shortcuts for hands-free logging. • Sync food, water, weight, and steps with Apple Health. [ SHARE & STAY CONNECTED ] • Follow friends and family to see their logs, or let your coach follow you. Share foods, meals, and recipes in a tap. ▶ GET EVEN MORE WITH MACROSFIRST PLUS ◀ • Autopilot, Copilot, weekly check-ins, and Expenditure charts. • AI Food Search by voice, text, or photo. • Different Daily Meals for each weekday, plus recurring foods. • Custom nutrient targets, plus nutrient trends and reports for any date range. • Macro Math: calories that always match your macros, even when labels don't. • Import recipes from any website. • Export to Excel or sync daily totals to Google Sheets. • Personal API access to build your own apps and dashboards. • Meal and day notes, unlimited friends, and priority VIP support. ▶ SUBSCRIPTION PRICING & TERMS ◀ MacrosFirst is free to download and use. MacrosFirst Plus is an optional auto-renewing subscription you can cancel anytime in your App Store account settings. Privacy & Security Policy: https://www.macrosfirst.com/privacy-policy.html Terms of Use: https://www.macrosfirst.com/terms.html

About

Carbon

This app acts as a personalized nutrition coach, helping you track your food intake and weight to adjust your calorie and macro targets. It provides weekly check-ins with clear explanations for any changes made to your plan, supporting various dietary goals like fat loss or muscle gain.

Highlights
  • Adaptive macro coaching
  • Personalized calorie and macro targets
  • Weekly weight trend analysis
  • Flexible calorie planner
  • Smart food logging with photo recognition
  • Support for various diet styles
Features
Read full description

The macro tracker that coaches you. Carbon Diet Coach is a nutrition coach and calorie tracker in one. Log your food, weigh in, and check in once a week. Carbon reviews your weight trend and what you logged, decides whether your targets should change, and explains every decision. Carbon pioneered adaptive macro coaching, and thousands of members use it to lose fat, build muscle, maintain, and reverse diet. HOW WEEKLY COACHING WORKS • Answer a few questions about your goal, body, and preferences • Get personalized calorie, protein, carb, and fat targets • Log your food and weigh in, or sync your weight from Apple Health • Check in weekly. Carbon looks at your multi-week weight trend and what you actually logged, then adjusts your macros or holds them steady • Read a clear check-in report, so you're never left wondering why Carbon did or didn't make a change • Pick your check-in day, or check in early when your schedule changes PROTEIN BUILT AROUND YOU Your protein target is based on your lean body mass, with an optimal range for your goal and diet style. Research links higher protein intake during fat loss to keeping more lean mass, so Carbon keeps protein front and center all week. FLEXIBLE CALORIE PLANNER The Calorie Planner works like a weekly calorie budget. Give yourself more calories for weekends, dinners out, and events, and fewer on quieter days, while your week stays on target. • Finished days reflect what you actually tracked, and the rest of your week rebalances around them • Hold protein keeps your protein target steady while daily calories shift • Adjust calories, protein, carbs, and fat for any upcoming day, or reset a day to your weekly defaults COACHING WITH GUARDRAILS When progress stalls, Carbon makes small changes instead of big cuts, keeps your rate of loss in check, and sets a calorie floor for you. If you reach it, Carbon recommends a switch to maintenance or a reverse diet. If your week wasn't fully tracked, Carbon won't react to incomplete data. SMART LOGGING Smart Logger: snap a photo of your meal or describe it, and Carbon matches each food to an entry in our verified food database. You review the matches, confirm your servings, and log the whole plate at once. Smart Suggestions: foods you log often are pre-filled in your diary. Tap to confirm or skip. Remaining Macros: see what's left for the day and preview how a food fits before you log it. Serving Amount Solver: enter the macros you have left and Carbon finds the serving that fits. Plus a barcode scanner, nutrition label scanner, quick add, copy meals, favorites, and custom foods and recipes. GOALS AND DIET STYLES Fat loss, muscle gain, weight maintenance, and reverse dieting. Choose Balanced, Low Carb, Low Fat, Keto, Plant-Based, or High Protein then fine-tune each macro within recommended ranges. PROGRESS YOU CAN SEE Charts for weight, body fat, lean body mass, calories, macros, and estimated metabolic rate, plus a check-in history showing every adjustment and why. ALREADY HAVE YOUR OWN TARGETS? Use Carbon as a macro, protein, and nutrition tracker, calorie counter, and food log. SUPPORT FROM REAL PEOPLE Questions go to Carbon's support team, and members share tips in our private community. BUILT ON EVIDENCE Created by Dr. Layne Norton (PhD, Nutritional Sciences) and Keith Kraker, RD. SUBSCRIPTIONS Monthly, 6-month, and yearly plans. Every plan includes full access to all features. Your subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings. Payment is charged to your Apple Account when you confirm your purchase. Food database powered by FatSecret: https://fatsecret.com Terms and Conditions: https://joincarbon.com/terms-and-conditions/ Privacy Policy: https://joincarbon.com/privacy-policy/

Screenshots

MacrosFirst4 screens
Carbon4 screens

Verdict

The call

The clearest difference is ads: Carbon at none against MacrosFirst's shown. MacrosFirst's advantage is device support (3 vs 1). On price, rating, review sentiment and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MacrosFirst sells 7 in-app purchases, starting at $11.99 per month and Carbon sells 9 in-app purchases, starting at $11.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for MacrosFirst against 4.8 for Carbon. Both are backed by a comparable volume of ratings — 24K and 8.2K respectively. Written reviews are what separate them: 73% of MacrosFirst's written reviews are positive against 79% of Carbon's.

UpkeepUpdate frequency

MacrosFirst ships an update every 5 days, Carbon weekly. Both last shipped on November 11, 2026.

Scorecard2 real differences · 9 level
MacrosFirst versus Carbon: the parameters behind the verdict, then further details
ParameterMacrosFirstCarbon
PriceFreeFree
Rating4.9 (24K ratings) — better4.8 (8.2K ratings)
Positive reviews73.4% of reviews79.3% of reviews — better
Number of ratings24K — better8.2K
Update frequencyEvery 5 days — betterWeekly
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#84 — better#99
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS16.0 — better16.6
Further details — not scored
Size222 MB105 MB
Age rating12+17+
DeveloperMacrosFirst, Inc.Reform LLC

Customer experience

MacrosFirst

All ratings23,760 ratings
Positive97.2%
Neutral1.5%
Negative1.3%
Written reviews531 reviews
Positive73.4%
Neutral6.4%
Negative20.2%

Carbon

All ratings8,144 ratings
Positive95.9%
Neutral1.4%
Negative2.7%
Written reviews459 reviews
Positive79.3%
Neutral6.3%
Negative14.4%

User reviews

MacrosFirst

From 24K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Intuitive interface
  • 💯 Accurate macro tracking
  • 🔍 Extensive food database
  • 🔓 Free features without paywall

Room to improve

  • 🐛 Occasional bugs and glitches
  • 📚 Limited food database for some users
  • 🔢 Difficulty adjusting serving sizes
  • 🔍 Inaccurate nutrition info for some items
  • 🔧 Lacking certain customization options

Carbon

From 8.2K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Flexible and customizable
  • 🔍 Accurate food database
  • 💡 Helpful coaching and adjustments
  • 🤝 Responsive customer support

Room to improve

  • 🐛 Limited food database for some regions
  • 🤔 Strict adherence required for adjustments
  • 🤷‍♀️ Lack of exercise tracking integration

Bugs and requests

MacrosFirst

Reported bugs

3 issues
  • Search function not working properly
  • Time zone issues causing date discrepancies
  • Scanning feature recording incorrect nutrition info

Requested features

5 requests
  • Integration with Apple Health
  • Ability to share meals/recipes with friends
  • Customizable macro goals (e.g., carb cycling)
  • Improved reporting and progress tracking
  • Option to submit food data corrections

Carbon

Reported bugs

2 issues
  • Occasional app crashes or freezes
  • Issues with resetting account data

Requested features

4 requests
  • Add water intake tracking
  • Improve barcode scanning functionality
  • Allow more flexibility in macro adjustments
  • Integrate with fitness trackers

In-app purchases

7 purchases

MacrosFirst

Subscriptions7
  • MacrosFirst Premium7 Days trial2 variants$11.991 Month
  • MacrosFirst Premium14 Days trial2 variants$11.991 Month
  • MacrosFirst Premium7 Days trial$41.991 Year
Show 4 more
  • MacrosFirst Premium7 Days trial$71.991 Year
  • MacrosFirst Premium14 Days trial$71.991 Year
  • MacrosFirst Premium7 Days trial$79.991 Year
  • MacrosFirst Premium14 Days trial$79.991 Year
9 purchases

Carbon

Subscriptions9
  • Monthly Subscription$11.991 Month
  • Monthly Subscription7 Days trial$11.991 Month
  • Monthly Subscription14 Days trial$11.991 Month
Show 6 more
  • Six Month Subscription$59.996 Months
  • Six Month Subscription7 Days trial$59.996 Months
  • Six Month Subscription14 Days trial$59.996 Months
  • Yearly Subscription$99.991 Year
  • Yearly Subscription7 Days trial$99.991 Year
  • Yearly Subscription14 Days trial$99.991 Year

Questions

Is MacrosFirst free?
MacrosFirst is free to download, with in-app purchases available.
Is Carbon free?
Carbon is free to download, with in-app purchases available.
Which has better reviews, MacrosFirst or Carbon?
MacrosFirst is rated higher. MacrosFirst averages 4.9 out of 5 from 24K ratings, while Carbon averages 4.8 from 8.2K ratings.
Do MacrosFirst or Carbon have ads?
MacrosFirst shows ads; Carbon does not.
Which is updated more often, MacrosFirst or Carbon?
MacrosFirst ships an update every 5 days, and Carbon weekly. Most recently, MacrosFirst was updated on November 11, 2026 and Carbon on November 11, 2026.
Which is more popular, MacrosFirst or Carbon?
MacrosFirst currently peaks at #84 in the App Store charts, and Carbon at #99. Chart position reflects recent download velocity rather than total install base.

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