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AppsHealth & Fitness

Carbon - Macro Coach & Tracker

iOSv2.78.6119, 2026-11-04joincarbon.comApp Store
JSON / MCP
What it is

A macro and calorie tracker with a weekly coach: users log food and weight, check in once a week, and the app changes their targets and explains why. Aimed at people losing fat, building muscle or maintaining.

Maker
Reform, LLC
Launched
Apr 2020
Category
Health & Fitness
Price
Free, subscriptions $11.99 to $99.99
US ratings
8.1K, 4.8 avg
Best rank
#40 grossing, Finland
  • Made by Reform, LLC, released 2020-04-21, 8148 US ratings at 4.82597
  • Layne Norton, PhD (@BioLayne) is named as Carbon co-founder in the app's own X posts, for example 'Listen to Carbon co-founder @BioLayne...'
  • This is a third-party estimate, not a founder claim

How Carbon got its users

Carbon grows mainly through co-founder Layne Norton's audience, its own Instagram, and creator reviews, with no paid ads found. Confidence: low

Main channel: Own accounts, as the reading above names it
Own accountsPosts on XYouTubePress and articlesApp Store search and chartsPodcasts and interviews
Chartjump's reading of the evidence per channel, not install shares. Install-share estimate per channel with Pro
How it happened
  1. 2020-04App Store: Release of the app by Reform, LLC
  2. 2020-2021Founder reach and word of mouth: Reviews bunch in 2020-05 (38) and 2021-06 (43); cause not stated in the inputs
  3. 2022-02Unknown: Review spike of 67 reviews in one month, 42 in the next; cause not in the inputs
5 more steps:
Own accounts Carbon's own top posts
@carbondietcoach: 32 TikTok posts, 16K views
@carbondietcoachTikTokOwn account
1.6K views · 2025-09-20
@carbondietcoachTikTokOwn account
1.2K views · 2025-09-13
@carbondietcoachTikTokOwn account
1K views · 2026-10-23

Overview

Every channel we found, then the numbers behind it.

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How Carbon gets users, channel by channel
Chartjump's reading of the evidence
Own accounts
@carbondietcoach: 32 TikTok posts, 16K views
Shown at the top of the page.
Open the tab
Posts on X
40 posts name Carbon, 9.5K likes
The list:
YouTube
10 videos about Carbon, 37K views
Press and articles
11 articles found
The list:
Open the tab
App Store search and charts
11K ratings, 4.8 average; in a top 100 in 2 of 25 stores
  • United States 8.1K ratings, #93 grossing
  • Canada 1.1K ratings
  • Australia 774 ratings
Open the tab
Podcasts and interviews
3 episodes name Carbon, 1 founder quote
The list:
Open the tab
Creators and UGC
6 creators, 3 tag or link the app; 38 likes on their best posts
Open the tab
Bar length: how much evidence we found for the channel, on a log scale (ad-days for ads, likes for creator posts, views for own posts and YouTube, articles, episodes, ratings). It shows where the evidence is, not a measured install share.
Organic, own postsCreator posts
Category colors match on every tab
Own TikTok views per post
32 posts of @carbondietcoach
0 of 32 posts passed 100K. Median 399. Nothing after 2026-11-08.
05001,0001,5002,000Sep 25Dec 25Mar 26Jun 26Sep 262025-09-07: 606 views2025-09-13: 1,158 views2025-09-16: 228 views2025-09-20: 1,611 views2025-09-27: 665 views2025-10-21: 145 views2026-01-16: 261 views2026-01-20: 642 views2026-03-31: 588 views2026-03-31: 509 views2026-03-31: 292 views2026-03-31: 234 views2026-09-21: 1,001 views2026-09-22: 151 views2026-09-23: 175 views2026-09-24: 117 views2026-09-25: 611 views2026-10-05: 349 views2026-10-08: 115 views2026-10-10: 402 views2026-10-12: 182 views2026-10-17: 154 views2026-10-19: 131 views2026-10-21: 969 views2026-10-23: 1,034 views2026-10-26: 396 views2026-10-28: 89 views2026-10-31: 885 views2026-11-01: 469 views2026-11-03: 962 views2026-11-03: 509 views2026-11-08: 3 views
Posts per month: Sep 2025: 5, Oct 2025: 1, Jan 2026: 2, Mar 2026: 4, Sep 2026: 5, Oct 2026: 11, Nov 2026: 4
Creator posting patterns
posting patterns of 6 creators; 4 profiles checked so far
5 of 6 creator profiles checked: 3 with "one post", 1 with "4+ posts over 30+ days", 1 with "several posts within a month".
4+ posts over 30+ days 117%
Several posts within a month 117%
One post 350%
0 of 6 creators show a promo code (0%)Creator timeline
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Locales

Where it charts and how it rates, store by store.

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2 of 25
stores where it charts
top 100, category or overall
United States
biggest store by ratings
73.6% of the ratings in tracked stores
11.1K
ratings in tracked stores
25 App Store countries
4 of 25
stores in their main language
from the App Store listing languages
Free
ad languages
with a free account
Ratings by country
top 3 of 25 stores
United States holds 73.6% of the ratings in the 25 tracked stores.
United States US8,146
Canada CA1,103
Australia AU774
Best rank by country
category top 100, 2026-11-09
Best: #93 grossing in Health & Fitness, United States.
United States US#93
GrossingFreePaid
longer bar, higher rank
Store by store
3 of 25 stores, by ratings
CountryBest rankGrossingFreeRatingsAvgListing languageAds in it
United States US #93 grossing, Health & Fitness #93- 8,146 73.6% 4.83 English-
Canada CA not in a top 100 -- 1,103 10% 4.82 English-
Australia AU not in a top 100 -- 774 7% 4.85 English-
22 more countries
Every tracked store: ranks, ratings and language support.
Daily tracker, 2026-11-09: the rating count and average in each country's App Store, and the best position in Apple's top 100 for the category (overall when only that). A dash: not in that top 100. Listing language: whether the App Store listing is in the country's main language. Ads in it: share of the dissected ads in that language.
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Creators and organic

Creator posts, codes and the app's own accounts.

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Next: Audience

Audience

Who the ads speak to, with the evidence behind each group.

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Next: Revenue and charts

Revenue and charts

Revenue the founder or press stated, then what moved the charts.

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  • Founder-stated numbers with dates
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Next: Sources

Sources

Where every number comes from, and what is missing.

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Collected by Chartjump
Meta Ad Library, logged out
TikTok Commercial Content Library, EU only
Google Ads Transparency Center, joincarbon.com
TikTok organic: account pages, hashtag and code search
Daily tracker: ratings, App Store top charts per country
App Store listing and review feed, 728 reviews
Apple charts, ratings, public pages: input to the Chartjump estimate
App Store listing
apps.apple.com
Podcasts
Free account
4 episodes with the founder or team
Press and founder posts
1
“The secret is out”
X, 2025-11-04
11 press links
Every article and interview we read.
Data problems found
4
01Engagement (comments, likes, shares) measured on 0 of 32 own TikTok posts.
02Creator types: 4 of 6 creator profiles opened; 1 creators stay "not checked yet" until checked.
033 accounts found in searches are left out of the creator counts: 3 point at another app or are named like the app without being it, 0 never name, tag or link it.
04No Meta video ads dissected yet.
Store data
secondary
8,148
ratings
4.83
average rating
- / -
US free / grossing, 2026-07-30
2
countries charting
Caveats
11
dissection.json was not present and no Meta ads were captured
Meta Ad Library searches are logged-out keyword searches
TikTok ads were checked only in the EU/UK/CH library
Google Ads Transparency Center was blocked; Apple Search Ads has no public library
Instagram @biolayne is not the app's account (name alike)
Instagram reel view numbers on profiles could not be matched to single reels
TikTok view counts are the numbers on cards
The three organic dissections are all Layne Norton's own posts
Shares in mix are rough estimates
No Reddit threads were found; the podcast transcript is from 2021 and does not discuss growth
App Store reviews are public RSS reads

Paid: every active ad found for the advertiser in the Meta Ad Library with start date and variant count as Meta publishes them; videos fetched for analysis only and deleted after frames, transcript and OCR were derived; one model read per creative into a fixed schema. Organic: public profile counts only. Creators count only when a caption tags, links or names the app (graded per creator). Founder statements quoted verbatim and checked by code. Estimates labelled and linked. Not affiliated with the app or its publisher.

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No ads in Meta's Ad Library (logged-out keyword searches, checked 2026-11-09). No ads in TikTok's ad library (EU, 2 searches). No Google ads for joincarbon.com. Not shown for Carbon, nothing to fill them: Winning ads, Top videos, Teardowns, Ad categories, Creative families, Psychology. Data as of 2026-11-09.

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