Carbon - Macro Coach & Tracker

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2.95K reviews
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Everyone
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About this app

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 Google Health Connect
• 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.
Subscriptions renew automatically unless canceled before the end of the current period. You can manage or cancel anytime in your Google Play account under Payments & subscriptions.

Food database powered by FatSecret: https://fatsecret.com
Terms and Conditions: https://joincarbon.com/terms-and-conditions/
Privacy Policy: https://joincarbon.com/privacy-policy/
Macro tracker and calorie counter with weekly coaching that adjusts your plan
Updated on
Nov 4, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Personal info, App activity and 2 others
  • This app may collect these data types
    Personal info, Photos and videos and 3 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

2.91K reviews
rezart mersini
May 12, 2022
I love the functionality of the app and how it is all set up. However, how can you put a product out in the market, charge top dollar and out of 10 products I scan, all of them have the wrong nutritional information?!?! Dr.Layne and team, please fix this, it is annoying and frustrating. Get a better database to pull the info from. Edit: more food items are being included but still, sometimes you acan an item and something else shows up. Overall, not.bad 8/10
64 people found this review helpful
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Maggie Jones
August 30, 2021
I worked with a nutrition coach for a year at $125 monthly. Progress wasn't always made and I was burned out. I found out about Carbon on Instagram and decided to give it a try. Let me tell you, this is NOT a simple food tracker. It is a smart coach that will give you customized macros based on the progress you want to make and even takes into account things like your period. In your weekly check in, it might make adjustments if needed. For less than $100 a year, totally worth it!
18 people found this review helpful
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Laura Brown
January 20, 2021
Loving this app so far, now that I'm consistently using it. Yes, you may need to enter some foods that are not in the database yet, but that means you can ensure the nutrition information is correct (a major issue I've found with MFP; having such a large database built by users has allowed a lot of incorrect information to be logged.) I also love that it adjusts calories up around menstruation, which really helps with my overall energy during that time of the month.
21 people found this review helpful
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What’s new

- Planner 2.0 brings you advanced control over your weekly macro budget
- Drag & drop let's you easily re-order diary entries and recipe ingredients
- Other minor enhancements and important fixes