Manual entry
Type a food and its carbs, with optional fiber, sugar, serving size and notes. Favorites and recent foods make repeat meals a single tap.
CarbLuma by ClinicalTools
Snap it. Track it. Know your carbs.
A calm, private carb tracker for iPhone. Log carbs by hand, scan a barcode, or snap a photo of your meal for an AI estimate that you review and correct before anything is saved.
Coming soon to the App Store
How we handle your data
Log carbs your way
Fast for the foods you eat every day, flexible for everything else. You stay in control of every number.
Snap a meal
Take or choose a photo and get an AI carb estimate for each food you can see. You review, edit and confirm every item. Nothing is saved automatically.
Barcode scanning
Look up packaged foods in the community-run Open Food Facts database, then check the values before you save.
Nutrition labels Pro
Read carbs, fiber and sugars from a label photo. Text recognition happens on your iPhone, and you confirm each value.
Stats and trends
A daily dashboard with your goal and what's remaining, meal totals, and daily and weekly charts. Monthly and yearly statistics come with Pro. Days you didn't log show as "no entries", never as zero.
Total or net carbs
Choose what you track. Net carbs are total carbs minus fiber. If fiber wasn't recorded, CarbLuma tells you instead of guessing.
AI that asks before it saves
A photo can't show exact portion weights, hidden ingredients, oils, sauces or added sugars. So CarbLuma treats every AI result as a starting point, never as the final word.
Snap or choose a photo
The photo is sent only when you tap Analyze, as a resized copy with location data removed.
Review the estimate
See each food with a portion, a carb estimate and a range. Edit, scale, add or remove items.
Confirm and save
Only when you tap Confirm does the meal go into your log. Until then, nothing is saved.
Private by design
Your food log is yours. We built CarbLuma to collect as little as possible.
- No account required. There's nothing to sign up for.
- Your log stays on your iPhone, or in your private iCloud if you turn on sync. We can't see it.
- Photos leave your device only when you tap Analyze. Our server processes them in memory and doesn't store them.
- Nutrition label scanning runs on device.
- No ads, no analytics, no tracking. CarbLuma doesn't follow you across apps or websites.
- Delete everything in one step from Settings whenever you like.
CarbLuma Pro
Everyday tracking is free. CarbLuma Pro adds more AI photo analyses, label scanning, deeper statistics and exports.
| Feature | Free | Pro |
|---|---|---|
| Manual tracking, dashboard, barcode scanning | Included | Included |
| Daily and weekly statistics | Included | Included |
| AI photo analyses | 5 per month | 150 per month |
| Favorites | 10 | Unlimited |
| Nutrition label scanning | Not included | Included |
| Monthly and yearly statistics, personalized insights | Not included | Included |
| PDF and CSV export | Not included | Included |
| iCloud sync (when available) | Not included | Included |
CarbLuma Pro is available as a monthly or annual auto-renewing subscription. Prices are shown in the app and on the App Store before you buy. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel them in your Apple Account settings. See our Terms of Use.
Important health information
- CarbLuma is a carbohydrate tracking and awareness tool. It is not a medical device and does not provide medical advice.
- AI results are estimates from a photo and can be inaccurate. Portions, hidden ingredients and sauces can't be seen reliably.
- Do not use CarbLuma to calculate insulin doses or to make treatment decisions.
- Talk to your healthcare team about your nutrition needs.