Easily track your nutrition by photographing your meals. The app identifies foods, estimates portions, and breaks down calories and macros. Review your daily intake, weight trends, and gain insights into your eating habits.
1.18
October 30, 2026
Performance updates and design improvements.
Unlimited photo logging, insights and priority analysis
You take a photo of your meal, and Calvin identifies the foods, estimates portions, and calculates calories, protein, carbs, fat, and fiber. It then breaks down the nutrition for each individual food item on your plate.
Yes, every entry in Calvin can be opened to view and edit individual foods, adjust portion sizes, or correct misidentified items. The total for the day will update automatically.
The free version offers photo logging (up to 20 analyses per day), plain-text entry, barcode scanning, food search, water and weight tracking, basic insights, and the last 7 days of history.
Calvin Pro increases photo analyses to 100 per day and includes full history access, advanced insights, weight predictions, priority processing, and data export. It is available via monthly or yearly subscriptions.
Calvin Pro is available for $9.99 per month or $79.99 per year. Both subscription plans include a 7-day free trial, and you can cancel anytime during the trial period without being billed.
Yes, Calvin includes integration with Apple Health, allowing for seamless data sharing between the two applications.
Calvin's readings are estimates and not lab measurements. They are designed to be good enough to guide your nutrition choices, and you always have the ability to correct them.
Calvin was last updated on October 30, 2026, with version 1.18. This indicates a consistent development cycle for the application.
