Treena

Treena is a mobile-first integrated development environment that puts a full coding setup in your pocket. It combines a code editor, terminal, file manager, and AI coding agent in a cloud-based workspace designed specifically for smartphone screens. The idea is that you can write, test, and ship code without ever opening a laptop.

The problem it tackles is something most developers experience but rarely solve. You have an idea on the train, notice a bug while walking, or want to knock out a quick fix before a meeting. Pulling out a laptop is impractical. Mobile coding apps exist, but they tend to be stripped-down editors or awkward ports of desktop tools that fight the small screen instead of embracing it. Treena was built phone-first, so the plan and agent workflows, terminal interactions, and GitHub operations all work naturally with touch navigation.

Under the hood, computation happens in the cloud, which keeps your phone's battery out of the equation. You get CLI tools and development environments that work without configuration. The AI agent can operate in Plan mode, where it proposes steps for you to review, or Agent mode, where it executes autonomously while you watch. Mid-task you can switch between models if one gets stuck or you want a different style of output. Supported providers include OpenRouter, OpenAI, Anthropic, Google, DeepSeek, and Mistral. You bring your own API keys, so you control the cost.

GitHub integration is first-class. You sign in, clone a repo, describe what you want in natural language, review the agent's proposed changes as diffs, run tests, and push commits. All from the same mobile interface. This closes the loop for real development work rather than just editing files.

It fits developers who already embrace remote and async workflows and want to extend that flexibility to their phone. If you travel a lot, commute on public transit, or simply like the idea of coding from anywhere without lugging hardware, this is aimed at you. It also appeals to anyone curious about AI-assisted development but put off by the complexity of setting up local agent tooling.

Where Treena stands apart is the native mobile focus. Competitors like Cursor and Replit started as desktop products and scaled down to mobile as an afterthought. Treena started with the phone screen as the primary constraint, which shows in the interface layout and interaction patterns. The full plan, agent, terminal, testing, and GitHub push workflow works from a touchscreen.

Access is currently pre-release with a bring-your-own-key model. You provide API credentials for your preferred AI provider, and Treena handles the orchestration. No published pricing yet, but the key-based approach means your costs tie directly to your usage with the model provider.