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Point your camera at food and tap the scan button. AI identifies each item and estimates carbohydrate content using a combination of on-device machine learning and cloud-based analysis.

Carb estimates are approximate and should not be used for medical dosing. They are enriched with USDA nutritional data when available. Always consult your healthcare provider for precise carb counting.

CarbZen requires iOS 17.0 or later. It is designed for iPhone.

All scan history is stored locally on your device. Photos sent for analysis are processed in-memory and immediately discarded — they are not stored on our servers.

Free users get 3 scans per day with basic carb tracking. Upgrade to CarbZen Pro for unlimited scans, full macro breakdowns (protein, fat, fiber, sugar), daily carb goal tracking with a progress ring, weekly trends and averages, net carbs mode, and meal notes.

CarbZen Pro subscriptions renew automatically through your Apple ID at the start of each billing period (monthly or yearly). You can cancel anytime in Settings → Subscriptions. If you cancel, you'll retain Pro access until the end of your current paid period.

Open your device Settings → tap your name at the top → Subscriptions → CarbZen → Cancel Subscription. You must cancel at least 24 hours before the end of your current billing period to avoid being charged for the next period.

Go to Settings → Subscription → Upgrade within the app, then tap "Restore Purchases" at the bottom of the screen.

Go to Settings → CarbZen and make sure Camera access is enabled. If you don't see CarbZen in Settings, try deleting and reinstalling the app, then grant camera permission when prompted.

For best results: use good lighting, photograph a single plate at a time, capture from directly above at a slight angle, and keep the food in focus. After scanning, you can tap the carb total to manually adjust it, or remove individual food items that were misidentified.