---
title: "Preview your app"
description: "Run your app in an isolated live preview, click through real screens, and test the API before anything goes live."
url: https://evonx.ai/docs/get-started/preview-your-app
locale: en
updated: 2026-09-04
---

# Preview your app

Run your app in an isolated live preview, click through real screens, and test the API before anything goes live.

Your first app exists — now see it run. In this step you'll start live previews of
both Garage Usta repositories, click through the real screens, and learn what to
check before moving on.

> **Note**
> This page continues the journey from
> [Build your first app](/docs/get-started/build-your-first-app). If you haven't
> scaffolded an app yet, start there.

## Start both previews

1. Open your business and go to **Preview**. You'll see a card for each repository
   — for Garage Usta, the web app and the API.

2. Start the **API preview** first. Watch the logs: Evonx restores dependencies,
   builds the project, creates a temporary Postgres database just for this preview,
   applies migrations, seeds example data, and boots the API.

3. Start the **web preview**. When it's ready, the preview URL becomes active.

> **Tip**
> Order doesn't strictly matter — previews find each other — but starting the API
> first means the web app has data the moment it loads.

## Click through like a user

Open the web preview and use it the way your staff would: register a vehicle, open
a repair job, change its status. The example data seeded by Evonx gives you
something realistic to click on immediately.

Worth checking on a first pass:

- Do the screens match what you asked for? Missing pieces are normal at this stage
  — you'll request changes in the next step of the journey.
- Does saving work? Create something, refresh, confirm it's still there.
- Open the preview on your phone with the QR code — see
  [Test on your phone](/docs/preview-and-debug/test-on-your-phone).

## If something fails

Previews fail for real reasons — a bad migration, a build error. The failing card
shows the logs, and **Analyse & Fix** can read them, explain the root cause, and
apply a fix. See [Analyse & Fix](/docs/preview-and-debug/analyse-and-fix).

> **Note**
> Idle previews stop automatically after a while, and plans limit how many run at
> once — restarting is one click. Details on limits: [pricing](/pricing).

## Check your work

You've seen your app running: real screens, real data, on an isolated copy that
can't hurt anything. You've probably also spotted things you want to change — good.
That's exactly what the next step is for.

## Next step

Ask for your first change:
[Evolve your app with AI](/docs/get-started/evolve-your-app). For the full preview
system reference, see the
[Preview Hub overview](/docs/preview-and-debug/preview-hub).