Modaal AI builder creates native iOS and Android apps from one shared core

Summary

Modaal is an AI-assisted mobile app builder that takes an idea or existing product documentation through planning, implementation, testing, and release for native iOS and Android apps. Its shared core stores feature behavior once, while the platform-specific interfaces are written in SwiftUI for iPhone and Jetpack Compose for Android. Before code is generated, the agent creates a PRD and a feature specification covering scenarios, technical approach, implementation steps, risks, files, and testing; the user reviews and approves the plan first. Users can choose Production, Duet, or Quick prototype architectures and connect subscriptions they already have for Claude, ChatGPT/Codex, Gemini, Copilot, or other supported agents. Modaal builds and runs the apps in local native simulators and creates real Xcode and Android Studio projects in Git from the first build. It also supports GitHub-based review and publishing through the user’s Apple account. The product emphasizes native access to widgets, Live Activities, Shortcuts, sensors, background tasks, watch apps, and Wallet features, without a web view or bridge. Shared fixtures replay both apps during builds so behavior mismatches can fail the build. The page says the Duet framework is open source and describes Modaal as available for Mac with a free plan that does not require a credit card.