a0.dev (YC W25)

a0.dev is a technology company that provides a platform to accelerate mobile application development for developers. Founded in 2025 by Seth Setse and Ayomide Omolewa and headquartered in San Francisco, CA, the company is a graduate of the Y Combinator Winter 2025 batch. The founders, who have seven years of experience building and launching their own successful mobile apps, created a0.dev to address the difficulties and slow pace of mobile app development compared to web development. Their goal is to empower more individuals to create and monetize their own software.

The company's core product is an AI-powered platform that generates complete, custom React Native projects from plain English descriptions, reducing development time from weeks to days or even minutes. The platform handles the entire development workflow, from AI code generation of the front-end, UI screens, navigation, and state management to back-end logic and one-click App Store deployment. Key features include an "Agent Mode" with thinking capabilities for solving complex problems, instant iOS builds, a live preview and hosting feature that bypasses the need for TestFlight, built-in payments support for monetization, and a remote cloud IDE for real-time collaboration. The business model operates on a tiered subscription basis, including a free plan for personal projects and paid "Pro" plans that offer higher usage limits, access to more advanced AI models, and features like custom domains. Having secured $500K in a seed funding round in March 2025, a0.dev serves developers, entrepreneurs, and startups looking to rapidly prototype and launch mobile applications.

Keywords: AI app builder, React Native generator, mobile development platform, code generation, no-code, low-code software, app development automation, YC W25, full-stack development, mobile UI prototyping, cloud IDE, application deployment, developer tools, AI agent, instant app generation, mobile-first design, rapid prototyping