AI App Builder - a0.dev

Build app ideas with natural-language prompts

AI App Builder - a0.dev is a productivity tool for turning app concepts into working mobile prototypes with help from generative AI. It suits entrepreneurs, product designers, and developers who want to test an idea without starting every project from an empty codebase. Instead of writing each interface element manually, you describe what you want the app to do and use the generated result as a starting point.

Preview changes while you refine the project

The app connects your prompts with a live mobile preview, so you can inspect the current result as you develop. This makes it easier to check layouts and interactions on a phone rather than relying only on written descriptions. You can continue the process by asking for targeted changes, such as adding a screen or adjusting part of the interface, then review the updated version.

Useful for prototypes, with limits for complex apps

a0.dev is best suited to early-stage products, interface experiments, and minimum viable apps where speed matters. It reduces the amount of setup needed for a first test, but it does not remove every development task. Projects with complicated backend behavior may still require programming knowledge, and users who want complete control over the underlying code or a workflow outside the a0.dev ecosystem may find the platform restrictive.

App details

• Category: Productivity
• Developer: a0.dev
• Package: dev.a0.android.app
• Rating: 4.5/5 from 1,797 reviews
• Installs: 10,000+