Carbon - Macro Coach & Tracker

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2.95K reviews
Content rating
Everyone
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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

2.9K reviews
Scott Ohlms
August 20, 2026
Lets first establish what this app is: It is NOT *just* a food logging app. It is also a coaching app that adjusts your intake for you week to week based on your goals and results. Every time I've thought this app was great, it went on to get even better. There are so many options for customizing things that I haven't even used it all yet. Easily one of the best value apps out there.
3 people found this review helpful
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Reform LLC
August 26, 2026
Thank you for such a thoughtful review, Scott! You really captured what we want Carbon to be. Food tracking is important, but the real value comes from having a coach that learns from you and guides what comes next. We love that you've seen the app improve over time. There’s always more we want to make better! Thanks for being along for the ride!
Melissa Ramos
September 15, 2026
So far I have been able to lose 50 lb of fat with this app. i went from 256 to 205 in about 10 months. It helps me stay consistent and gives me a lot of nutrition knowledge, so even when I'm not tracking (vacation makes it hard) I'm still able to make good choices and stay on track. Love the new update too.
1 person found this review helpful
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Reform LLC
September 16, 2026
Melissa, 50 pounds in 10 months is amazing! We especially love that Carbon has helped you build nutrition knowledge you can use even when you aren’t tracking. Being able to enjoy a vacation and still feel confident in your choices is a huge win. Congrats on your progress, and we’re glad you’re loving the new updates, too!
Saul M
July 26, 2024
I've been using the app for about a month so far. The check in thing is cool and I feel like the macro targets are really spot on for me. The only annoying thing is the food search is pretty bad. Like, I will type the exact name and it won't pop up. To the point where searching for certain foods is a pain, and it discourages logging food... which is kinda the whole point. So, if they could make that better then I would probably keep using it. But at this point I will probably go back to Lose It!
16 people found this review helpful
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Reform LLC
August 13, 2024
Thank you for being a Carbon Diet Coach user and for your review! We would be happy to work with you directly regarding the search function challenges you may be seeing! We do have a verified food database with thousands of items, as well as a slick Label Scanner to further assist in user food entry. Reach us in-app or via support@joincarbon.com!

What’s new

Smart logger
Smart diary suggestions
Most used serving amounts
Food usage log history
Remaining macros toolbar
Serving amount calculator