Fud AI - Calorie Tracker

Fud AI is a free, open-source AI calorie tracker for iPhone and Android that lets you log meals and monitor nutrition using multiple input methods. It is built for health-conscious people who want to track diet and fitness metrics on their phone without a paywall. You can log meals by photo, barcode, voice, Siri, or text, and preview the nutrition breakdown before saving an entry. The app tracks macros and body fat, offers widget support for quick logging, and provides AI coach insights to interpret your data. It integrates with Apple Health and Health Connect so nutrition data flows alongside your other health metrics. The project is open source, built with SwiftUI, Kotlin, Jetpack Compose, and web technologies on the front end, with RevenueCat and Vercel on the backend; it was founded in February 2026. Fud AI is currently a free application with no active subscription listed, though RevenueCat in the stack suggests in-app purchases could be added later. Because it is open source, developers can also inspect or self-host the code.

People use Fud AI to track daily calories and nutrition by quickly logging meals via photo, barcode, voice, Siri, or text, and to monitor macros and body fat over time.