Bitrig

Bitrig is a macOS app that uses AI to generate native Swift and SwiftUI code for Apple-platform apps. It helps people build, edit, and export iPhone, iPad, Apple Watch, and Mac apps from a conversational workflow.

AI Code Assistant AI Developer Tools AI App Builder

Visit Website

Overview

Bitrig is a macOS app for building native Swift apps with AI. It is aimed at people who want to turn an idea into working Apple-platform code through a conversational workflow instead of starting from a blank project.

The product generates real Swift and SwiftUI code that you can read, edit, and export. It also includes an integrated iPhone simulator, so you can see the app update as you ask Bitrig to change features or behavior.

Features

Real Swift and SwiftUI output

Bitrig generates actual Swift and SwiftUI code rather than a mockup or no-code abstraction. The code is meant to be readable, editable, and useful for learning as well as shipping.

Conversational editing

You describe changes in plain English, and Bitrig updates the app code for you. The simulator reflects those changes immediately, which keeps the build-and-review loop tight.

Integrated simulator

The app includes a real iPhone simulator beside your code so you can inspect how the app behaves as you iterate.

Apple platform coverage

Bitrig supports native Swift app building for iPhone, iPad, Apple Watch, and Mac apps, which makes it suitable for Apple-platform projects.

Exportable code without branding

You can export your code at any time, and the pricing page says there is no Bitrig branding or watermarks on the free plan.

Paid-plan workflow options

The Plus plan adds more credits, rollover for unused credits, more powerful models, priority support, and the option to bring your own Claude or ChatGPT subscription in Agent projects.

Use Cases

Prototype an Apple app idea
Describe an app idea in natural language and use Bitrig to generate a working SwiftUI starting point instead of assembling the project manually.
Review changes in context
Iterate on UI and behavior while watching the embedded simulator update, which helps you verify changes without leaving the coding flow.
Learn from readable code
Use the generated Swift and SwiftUI code as something you can inspect, edit, and learn from if you want to understand how the app is built.
Move toward App Store release
Prepare an app for distribution by exporting code and, on the Plus plan, shipping to TestFlight or the App Store with a paid Apple Developer Account.
Build for multiple Apple devices
Work on Apple-platform projects across iPhone, iPad, Apple Watch, and Mac, especially when you want one AI-assisted workflow for native Swift app development.

Pros and Cons

Pros

Generates actual Swift and SwiftUI code that can be inspected and edited.
Supports a conversational workflow for making changes in plain English.
Includes an integrated iPhone simulator for immediate visual feedback.
Offers a free tier for getting started before moving to Plus.
Allows code export at any time.

Cons

It requires macOS 15+ and Apple silicon, so it is limited to that hardware and operating system combination.
Distribution to TestFlight or the App Store requires a paid Apple Developer Account.
The source notes that some framework requests may not be supported, and Bitrig will tell you when it cannot handle a request.

FAQ

What does Bitrig do?

Bitrig is a macOS app for building native Swift apps by chatting with the tool in plain English. It generates Swift and SwiftUI code, and the code is editable and exportable.

What do I need to run Bitrig?

The source states that Bitrig requires macOS 15+ and Apple silicon.

What platforms can I build for?

Bitrig supports building native Swift iPhone, iPad, Apple Watch, and Mac apps. It also includes a built-in iPhone simulator view and a workflow that updates code and the simulator as you make changes.

Do I need an Apple Developer Account?

The pricing page says you can build and test apps on your own device without an Apple Developer Account, but distribution to TestFlight or the App Store requires one.

Is there a paid plan?

The pricing page says Bitrig offers a free plan, with a Plus plan for more credits and additional features such as more powerful models, priority support, TestFlight/App Store distribution, and the ability to bring your own Claude or ChatGPT subscription in Agent projects.