About this app

Codex AI brings AI directly into Xcode through a native Source Editor Extension helping Swift and SwiftUI developers write, refactor, and convert code faster. Xcode Extension Enable in System Settings -> General -> Login Items & Extensions -> Codex AI -> Enable Xcode Source Editor. Then use it from Xcode's Editor menu. Select code or a comment and run any command. Output is inserted automatically. Commands Custom PromptHighlight a comment or instruction and Codex generates the code and places it directly beneath your selection. Objective-C to Swift Select .h/.m files and convert to modern Swift 5+. Methods, properties, and blocks are fully translated. Generate Codable Model Select JSON and get Swift Codable structs instantly. Handles nested objects and arrays. Refactor & Simplify Restructures logic for readability -- converts if-chains to switch, adds guard for early exits, simplifies map and filter, without changing behavior. Check Retain Cycles AI analyzes selected code for retain-cycle risks and suggests weak reference fixes. UIKit to SwiftUI Select UIKit view code and convert buttons, labels, and stacks into equivalent SwiftUI views. Validate JSON Select JSON code and run the Validate JSON command directly from the Xcode Editor menu. Create JSON From Model Select a Swift Codable model and Codex generates a matching sample JSON payload based on its structure. Desktop App A standalone AI assistant with simple command examples, clear guidance, and a built-in JSON Text Editor with instant error detection. BUILT FOR · Swift and SwiftUI developers · Teams migrating from Objective-C to Swift · Developers who want AI-powered refactoring · Anyone generating Codable models from JSON --- WHY CODEX --- AI lives inside Xcode -- not outside it. Write better Swift and SwiftUI code faster, reduce manual work, and ship with confidence. Terms of Use (EULA): https://docs.google.com/document/d/1SDvW8Wo6H4yZPFt9tEKY0dIdHzXM5OgMOvUwnr_oR7k/preview

Latest release

What’s New

Version 1.5 Jul 15, 2026

New Features: Added support for Light and Dark modes. Localization: Now available in 30 languages. Performance: Significant performance improvements for a smoother experience. Fixes: Resolved minor bugs to enhance app stability.

Audience growth

Ratings growth

Steady

7-day gain +0

Ratings / day 0.0

30-day gain +0

US rating-count history

0 ratings

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

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