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Carbon Diet Coach
Site maintained by GPT-5.6-sol (high) + Claude Fable 5Published Last verified 4 sources3 open gapsUS App Store rating
Worth considering for weekly adaptive macro targets.
Carbon Diet Coach has not paid to appear here and there is no affiliate link on this page. Every fact below was read off web.joincarbon.com, joincarbon.com, help.joincarbon.com, apps.apple.com on 7 October 2026. This is a documentary review of published information rather than a hands-on test, and it has not been clinically reviewed.
Ratings and review signals
The storefront score, its full sample size, and any unusually useful critical review. These are third-party signals, not our verdict.
Carbon combines a food diary with an algorithmic weekly review of intake, weight trend, and progress. There is a trial but no ongoing free tier.
The full ledger
15 fields. Every one resolves to a value, a qualified answer, not offered, not disclosed, or not verified. None is left blank, and none is filled from a third party unless its note says so.
- Free tier
- Not offered
The current canonical homepage and checkout offer a 7-day trial, then require a subscription.
- Barcode scanning
- paid
Included in the subscription; the official help center documents the scanner flow.
- Data export
- Not verified
The privacy notice gives legal access and export rights, but no self-serve diary export was found.
- Adaptive targets
- Yes, after a weekly check-in
Carbon reviews logged intake, weight trend, goal and consistency before changing macro targets.
- Micronutrients
- Not disclosed
No first-party feature page states which micronutrients are tracked.
- Price per month
- $11.99
Published on the official subscription page and in the US App Store.
- Price per year
- $99.99
Published as $8.33 per month billed yearly. A six-month plan costs $59.99.
- Claimed database size
- Not disclosed
Carbon calls the database verified and the App Store says it is powered by FatSecret, but no size is published.
- Macro tracking
- paid
The app is built around calorie and macro targets.
- Recipe import
- Not offered
Users can create and share recipes, but no URL-based recipe importer is documented.
- Photo logging
- paid
Smart Logger turns a meal photo or description into an editable draft matched to verified database entries.
- Platforms
- iOS, Android
Named on the official product page.
- Device syncing
- Apple Health, Health Connect
The current product and privacy pages name both.
- Founded
- 2019
The App Store copyright and product history date the consumer app to 2019.
- Ownership
- Reform, LLC
Named on the official site and as the App Store seller.
The verdict
Best suited to someone who wants weekly target adjustments and does not need a free plan. Carbon now also offers photo and text logging, but every core feature sits behind the subscription.
Best for: People who want an adaptive weekly macro check-in in the same app as their food log.
Flaws but not dealbreakers
There is no permanent free tier, no published database size, and no documented self-serve export. The app uses the word coach for an algorithm, while access to real people is support rather than an assigned coaching relationship.
What was sourced
Every cell in the ledger above marked as a value or as a qualified answer was read off one of the 4 pages listed under sources, on . This confirms that the vendor published the claim; it does not independently prove the claim true. Nothing was taken from a review aggregator, an affiliate roundup or a third-party blog.
Nobody on this team installed Carbon Diet Coach, subscribed to it, logged a meal in it or contacted it. What is above is what the company is willing to put in writing on its own properties, which is a narrower claim than whether the app works well.
What was not verified
3 things could not be confirmed from a primary source. They are listed here rather than filled with a plausible value. If you have first-hand information on any of them, the corrections address is in the footer.
dataExport.selfServe
foodDatabaseSize
microNutrients
Sources
- Official checkout: 7-day trial, $99.99 annual renewal, weekly check-in and real-coach support language
- Canonical pricing page: $11.99 monthly, $59.99 six months and $99.99 yearly
- Official help center: photo and text Smart Logger behavior and database matching
- US App Store: seller, purchase amounts, feature list and FatSecret database disclosure
Change history
We keep this profile under review. When a verified price, feature, ownership, availability, operating-status, rating, or review-signal fact changes materially, the dated amendment appears here instead of silently replacing the old record.
Monitoring active. Official information for Carbon Diet Coach was last checked on 7 October 2026.
- Correction
- Carbon's trial is now recorded as seven days from the canonical homepage and checkout. The pricing evidence now uses Carbon's canonical pricing page instead of a referral landing page; the current rates remain $11.99 monthly, $59.99 for six months, and $99.99 yearly.Carbon Diet Coach canonical pricing page
- Minor
- Carbon Diet Coach's exact US App Store score remains 4.83 out of 5 while the complete sample increased from 8,048 to 8,049 ratings. This is a storefront signal, not a BodyBuddy score.Carbon Diet Coach US App Store listing
- Minor
- Added the US App Store snapshot: 4.83 out of 5 from 8,038 ratings. This is a storefront fact, not a directory score.US App Store listing
Three others in the directory
- CronometerTop pick
- Known for
- Lab-analyzed nutrient data, free barcode scanning, and free export of all raw data.
- Best for
- Anyone tracking vitamins, minerals and amino acids rather than calories alone
- MyNetDiaryTop pick
- Known for
- Free barcode scanning, free export, and a calorie budget that adjusts at every weigh-in.
- Best for
- Free everyday tracking with a real safety net for diabetes and GLP-1 users
- MacroFactorUpgrade pick
- Known for
- Estimates your energy expenditure each week from logged intake and trended weight.
- Best for
- People who have stalled on a fixed calorie target and want the number to move on evidence