Summary
Creator Magic builds and ships a real iOS app in minutes: Macro Snap, which uses a photo of your food to log full nutrition into Apple Health. The idea comes from frustration with food trackers full of ads and paywalls, and the video revisits the channel’s most popular video from nearly two years ago to show how far vibe coding has come.
The build uses Abacus AI Agent, a general-purpose agent with its own sandbox computer. A prompt asks for a native SwiftUI app with SwiftData for local storage and HealthKit for writing nutrition data. The presenter runs it with GPT-6 Astra, confirms the agent’s plan, and chooses Google Gemini for vision. The agent asks for the Gemini API key through a built-in secrets prompt rather than pasting it into chat, and it generates the app icon too.
The agent’s browser-based iPhone simulator lets him test the app before installing it. A follow-up prompt restyles the default ugly design with a dark theme, and another adds barcode scanning backed by the free Open Food Facts database, which needs no API key. The app is then deployed to TestFlight and tested on a real iPhone, logging foods such as baked beans and a chicken Caesar salad to Apple Health.
📺 Source: Creator Magic · Published September 23, 2026
🏷️ Format: Hands On Build
