A plan you read before code exists
Echo writes the technical blueprint first — routes, data model, API contracts — so the cheapest moment to correct the direction is before anything is built.
AI app builder
An AI app builder that ships software, not snippets.
Echo takes a plain-English brief, plans the architecture, builds the interface and the backend in parallel, verifies the result in a browser sandbox, and hands you the source code. You get a working application you can click through, ship and keep — not a code fragment you have to wire up yourself.
- React, Next.js and TypeScript output
- Browser checks and previews
- Full source code is yours
01 / What you actually get
Most AI tools answer a question. An app builder has to deliver an application.
An application has a data model, a route structure and screens that agree with each other. The hard part is not writing a component — it is keeping a dozen decisions consistent while they are being made at the same time. That is what Echo is built to do.
Parallel specialist agents
Interface, state, server routes and quality are implemented by focused workers working at the same time against the same plan, without editing each other's files.
Verification in a real browser
Each build is compiled, requested and rendered inside an isolated sandbox. Failures are repaired and re-run before the preview is released.
Source code, not a hostage
Export the full project as a ZIP or push it to GitHub, GitLab, Bitbucket or Gitea. Standard dependencies, no proprietary runtime in the middle.
02 / How it runs
Five steps from a sentence to something you can ship.
Echo is a pipeline, not a chat window. Each stage exists because the alternative costs more.
Describe the outcome
Say who the app is for, what it must do, and what it holds. Attach a schema or a spec if you have one, or dictate the brief instead of typing it.
Plan, or plan and build
Choose Plan to review the architecture before a single file is edited, or Build to run the whole pipeline in one pass.
Review the build
Watch the agents work, read the file diffs in the activity trail, and click through the live preview. Every change is recorded.
Iterate in small steps
One change at a time, each one reviewed against the preview. The trail keeps every revision attached to the right file.
Take the code and ship
Export a clean ZIP or push to your repository, then deploy wherever you want. Echo can hand a build to a hosting provider you have connected.
03 / What you can build
Applications, not landing pages.
Echo generates React, Next.js and TypeScript projects: products with authentication, data, state and server routes.
SaaS products
Authentication, billing, onboarding, admin screens and the data model behind them.
Internal tools
Dispatch boards, inventory, approval workflows and the reporting your team actually wants.
Client portals and sites
Branded customer hubs, dashboards and marketing sites that run as real applications.
04 / Your keys or ours
Bring your own AI keys, or use managed Echo credits.
Echo supports OpenAI, Anthropic, Google Gemini, Groq and OpenRouter keys, plus managed credits for teams who would rather not run provider accounts at all. Either way you keep the source code.
Bring your own key
You pay the provider directly at wholesale rates and Echo adds no token markup. Runs on this path consume no managed Echo credits.
- OpenAI, Anthropic, Gemini, Groq, OpenRouter and more
- Automatic model routing and provider fallback
- Your own database and services
Managed Echo credits
Managed AI compute with no personal API keys required, a monthly credit allowance, credit top-ups and workspace collaboration.
- Managed compute and model access
- Credits per month, with top-ups that never expire
- Concurrent tasks, context limits and plan reviews that scale
Your own services
Connect the services a project actually needs through plugins: payments, authentication, databases, storage, email, analytics and custom APIs.
- Stripe, PayPal, Razorpay, Apple Pay, Dodo Payments, Polar
- Supabase, Firebase, PlanetScale, MongoDB Atlas, AWS S3
- Clerk, Auth0, NextAuth.js, Google and GitHub sign-in
05 / Learning resources
Learn the method, not just the buttons.
The Echo guides explain how to brief a build, how to scope an MVP, and what actually happens between a prompt and a verified project.
How to build a web application with AI
The brief, the plan, the parallel build, the verification and the iteration loop — end to end.
How to build a SaaS MVP with AI
How to scope an MVP down to the screens and data that matter before you ask for anything.
How AI coding agents plan, build and test
What happens between a prompt and a working build, and why the order of the phases is the product.
Describe it once. Review what Echo builds.
The free plan needs your own AI provider keys and gives you a full workspace, previews and source-code export. No card required to start.
Free to start · no credit card required · full source code ownership