Describe it
Say what the app should do in plain English. Plan mode asks about anything unclear.
AI app builder
Build a real app with AI, and own every line of it
Describe the app you want. Nexus asks the questions that matter, writes a plan, then builds it with real code, a real database and automated tests, in a project you can open, edit and push to your own GitHub.
- First month free
- $0 today
- Nothing to install
How it works
From a description to a working app
Review the plan
Nexus writes the plan as a file. Edit it, then press Build.
Watch it build
The agent writes code, sets up the database and runs tests on a cloud machine.
See the proof
It opens the app in a browser, checks the flows and shows you screenshots.
Not a toy
The parts that are hard to get right
In our SlotBook test, Nexus handled what simple generators skip: accounts and roles, time zones and daylight saving, and preventing two people from booking the same slot, enforced by the database. It finished with 227 passing tests.
Your code, your repo
Everything is plain code in a Git repository. Push it to GitHub and take it anywhere.
A database included
Postgres and file storage are set up for you on the free tier, or use your own provider.
Tests, not hope
Nexus writes and runs automated tests, and a second agent reviews the code.
Questions
Frequently asked questions
Do I need to know how to code?
No, you can describe what you want in plain English. Knowing some code helps you review the plan and the changes, and everything stays editable when you want to dive in.
Can I export the code?
Yes. The app is ordinary code in a Git repository. Push it to GitHub and run it anywhere.
What kinds of apps can it build?
Web apps and APIs in common languages and frameworks, such as Node.js and Python, with Postgres for data. Nexus works with the stack you choose.
Can it host my app?
One-click hosting and custom domains are coming soon. Today you can run the app with a shareable live preview, or push it to GitHub and deploy it with your host.
Your next idea starts here.
Open a project in your browser and let Nexus help you build it. Your first month is free.
$0 today · Cancel any time · Your code stays yours