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78
BU Score
Strong

Carbon - Macro Coach & Tracker

4.8 ✍️ Editor
✍️ BU Analytics Review

Carbon - Macro Coach & Tracker is an iOS app from Reform LLC in the Health & Fitness category, currently rated 4.8★ across 7,801 ratings. Initial signal reads as mixed reviews — supporters praise core features while critics cite stability/value gaps.

Our BU Score puts it at 78Strong (healthy traction). For a Health & Fitness app, that means healthy traction.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

creator

📊 Performance Tracking LIVE

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Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
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since first record
Range:

💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 14 of 14 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Paid app ($0.00)METRIC
+$2,800
Excellent rating (4.8★)METRIC
+$2,200
worth every pennyREVIEW
+$2,000
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
great valueREVIEW
+$1,600
cancelledREVIEW
−$1,500
Low install base (7,801 ratings)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
too expensiveREVIEW
−$1,000
support teamREVIEW
+$900
Established app (6y old)METRIC
+$800
Single-language (English only)METRIC
−$400
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.
💚Sentiment Over Time↑ green = positive · ↓ red = negative
Mar 25
Apr 25
May 25
Jun 25
Jul 25
Aug 25
Sep 25
Oct 25
Nov 25
Dec 25
Feb 26
Mar 26

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 112 MB🔞 4+📱 iOS 13.4+🔖 v2.74.4732🔄 updated 4mo ago🌐 EN📂 Health & Fitness💰 Paid🚀 Launched 2020 (6y old)

📝 About this app

Carbon Diet Coach is your nutrition solution for results that LAST. Whether your goal is to lose fat, build muscle, improve your metabolism, or simply maintain your weight, Carbon Diet Coach removes the guesswork.

Carbon Diet Coach is a science-based nutrition app designed by renowned nutrition coaches Dr. Layne Norton (Ph.D. Nutritional Sciences) and Registered Dietitian Keith Kraker (BS Dietetics).

It does everything a normal nutrition coach would but at a fraction of the cost. Simply select your goal, answer a few short questions, and it does the rest! You will get a customized nutrition plan based on YOUR goals and metabolism.

What's more, Carbon will adjust the plan as you progress to optimize your results. If you hit a plateau or stall, Carbon will make adjustments to keep you progressing towards your goal, just like any good coach would. Our coaching system uses the latest techniques in nutrition science to make sure you get the best results possible.

All you need to do is follow these simple steps:

∙ Log your food using the built-in food tracker
∙ Log your body weight
∙ Check-in each week

Do that and Carbon does the rest!

Carbon Diet Coach can do things other nutrition coaching apps can’t do. For example, your nutrition plan can be tailored to your diet preference:

∙ Balanced
∙ Low Carb
∙ Low Fat
∙ Ketogenic
∙ Plant-Based

Each setting is completely customizable so that you receive a plan that is sustainable for YOU!

Another feature that makes Carbon unique is the diet planner. Want high and low-calorie days rather than eating the same foods every day? Use the diet planner to set up your week and stay on track. Overate on one day and not sure what to do with your nutrition plan for the rest of the week? Adjust the diet planner to account for what you overate and Carbon does the rest!

Other coaching features include:

∙ Adjustable check-in days
∙ Check-in explanations so you're never left wondering why the app did or didn’t make a change
∙ Check-in history so you can look back and see why the app made various adjustments
∙ Charts showing your weight, body fat, lean body mass, calorie intake, protein intake, carbohydrate intake, fat intake, and metabolic rate
∙ Early check-in feature for those who can’t always check in on their specified day
∙ Goal tracker so you can see the progress you’ve made and how close you are to your goal
∙ Recommendations after you reach a goal so you can plan for what's next and KEEP your results
∙ Integrates with Apple Health to automatically read Body Weight and Body Fat values


Already know what you are doing with nutrition and don’t need Carbon to coach you? No problem, you can enter your nutrition targets and simply use the food tracker. Beyond the amazing coaching features of this app is a food tracker that's excellent in its own right. Its features include:

∙ A huge food database
∙ Barcode scanner
∙ Quick add macros
∙ Copy meals
∙ Favorite foods
∙ Create custom foods
∙ Create custom recipes

No matter what your goal is, Carbon Diet Coach is your solution.

Simple. Scientific. Sustainable.

App Subscriptions:

∙ Monthly
∙ 6 Months
∙ Yearly

The subscription period will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current subscription period. To turn this function off, simply go to your iTunes account and turn off auto-renew. Renewal payments will differ depending on subscription and pricing at the time of renewal. Your iTunes account will be charged when the purchase is confirmed.

Food database powered by FatSecret:
https://fatsecret.com

Terms and Conditions:
https://joincarbon.com/terms-and-conditions/

Privacy Policy:
https://joincarbon.com/privacy-policy/

🆕 What's New · v2.74.4732

Minor bug fixes

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Carbon - Macro Coach & Tracker
Developer
Reform LLC
Bundle ID
com.joincarbon.nutrition
App Store URL
Open in App Store
Category
Health & Fitness
Content rating
4+
Languages
EN

Company

Website
joincarbon.com
Tagline
The smart diet coaching app
Description
Want to get fit, lose weight or gain muscles? Reach your goals by controlling your nutrition with personalized macro plans, easy-to-use food tracking, and dynamic weekly adjustments in the Carbon app.
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$12.9K/mo
Top-grossing rank
🇺🇸#87 /100   🇨🇦#95 /100
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
https://twitter.com/BioLayne
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
https://joincarbon.com/blog
Press / News
Not found

Contacts & Socials

Socials
facebook · instagram · tiktok · twitter · youtube
Email
Not found
Phone
Not found
Contact page
https://joincarbon.com/contact-us
About page
Not found
📈Ratings growth7,801 ratings+46% lifetimeShow 3-year history estimate ▾May 2023Apr 2025May 2026
Tracked (54 weeks) Pre-tracking estimate (35 weeks) · model-based, ±5% noise · anchored to release date and current value
🗺️Geographic DistributionTop 10Top 30Top 60
US#87CA#95
🌍Top Countries — Grossing Rank2 countries
🇺🇸US
#87 /100
🇨🇦CA
#95 /100
📊Category Rank Trajectory#87 now · best #78 · worst #100
Lower line = better rank · Estimate from ratings growth model · Lower position on chart = worse rank · Higher = top of chart
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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