About Calvin
Photo-first calorie tracking so you can skip the manual logging
We built Calvin to get the friction out of calorie tracking. Understanding what you eat shouldn't mean scrolling through food databases or guessing at portion sizes. Take a photo and Calvin does the rest.
How It Works
Snap a Photo
Take a picture of your meal with your phone
AI Analyzes
Our AI identifies foods and estimates portions instantly
Track Progress
View calories, macros, and insights automatically
What Makes Calvin Different
Photo-First Approach
No more searching through endless food databases. Just point, shoot, and log.
AI-Powered Accuracy
Our models understand portions, ingredients, and cooking methods for reliable estimates.
Insights you'll actually read
Daily trends, macro splits, and patterns in how you eat. No fluff dashboards.
Privacy Focused
Your data is yours. We don't sell your information or use your photos without consent.
Our Technology
Calvin uses vision AI trained on thousands of foods, cross-checked against established nutrition databases. The pipeline runs two models, validates against USDA data when confidence is low, and caches identical photos to keep results consistent.
Ready to Get Started?
Free on the App Store. Photo in, nutrition out.
Get in Touch
Questions, feedback, or a bug to report? Email lands with a person: