Introduction
What is Koo
Host your apps free, for life. Koo deploys your apps onto Koo's hosting layer, keeps them running with live logs, metrics, and rollback, and gives every app a public page so you can show the world. Deploy from a container image today — Git and AI deploys are on the way.
Free, for life
Every account gets a free web service plus a free Postgres database and a free Redis cache — 0.5 vCPU and 1 GiB each, forever, with no credit card and no trial clock. Upgrade a service and the free share still applies — see the free tier for how the allowance works.
Everything in the free tier is yours forever. It is not a trial: the free services never expire, and they never require a card.
Deploy any way
Bring a container image and Koo ships it: point a service at the image and you get a live URL, an immutable deployment, and rollback.
- Container — available today. Deploy any public or private image. See Deploy a container.
- Git — available today. Koo builds from your repository, and can deploy on every push once you turn auto-deploy on. See Deploy from Git.
- AI Coming soon — you will describe what you want, and Koo will build and ship it. See Deploy with AI.
No lock-in
Your apps run on open, standard runtimes from a container image you control — nothing here holds your work hostage. Your images and code stay yours to move anywhere, and you can export your account data at any time.
Show the world
Every public app gets a showcase page with discovery, upvotes, comments, and follows. Your account doubles as a public profile that others can follow, and each app page is a shareable home for what you build.
How Koo is organized
Four nouns cover everything:
- Account — your tenant and public identity: a handle, a team with roles, and a plan. Your first account is your primary account and carries the free allowance.
- App — a group of services that ship together, with one public page. See the Environment object.
- Service — one running part of an app: a web service, a Postgres database, or a Redis cache, each with a size. See the Service object and Apps and services.
- Deployment — an immutable version of a service. Every deploy creates one, and rollback re-activates a previous one.
Where to go next
- Quickstart — deploy your first app in a few minutes.
- Free tier — exactly what is free, and how the allowance follows your services.
- API — drive Koo from code, CI, or agents.