# Preview your app

### Preview on your Android device

Our special AppMachine Previewer app for Android allows you to view your app while you are building it. You can download the App Previewer by scanning the QR-code below or opening this [link ](http://email.appmachine.com/t/j-l-msklu-l-gy/)on your Android smartphone. 

![](https://s3-eu-central-1.amazonaws.com/euc-cdn.freshdesk.com/data/helpdesk/attachments/production/80082189229/original/LdCKVI_Swhy_CB8GL7uYd5oTCjpSoku9fQ.png?1646141927)

Unfortunately there is no App previewer available in the Apple App Store at this time.

### Preview in the browser

You can also preview your app in the browser by clicking **preview** in the top right corner. Here you can see what your app will look like on mobile and tablet device. You can click through all the screens just as you would on a mobile device.

<figure><img src="https://2636455530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F2wzy1sO41plYrfJfaAhN%2Fuploads%2FLm5U86ReFFk3UynOaHM1%2Fimage.png?alt=media&#x26;token=c192268f-1cc8-4268-a890-d4270dfdd297" alt="Preview of an app"><figcaption><p>Preview your app</p></figcaption></figure>

The Previewer in the browser may, depending on the block you've selected to preview, show an error message indicating that the web view for that content is not available. The AppMachine Previewer in the browser may not load some web pages or web based content. (See screenshot below.)

You can open the link in a new tab to test the URL or preview the app in the AppMachine Previewer available in the Google Play Store.&#x20;

Rest assured, the content will display correctly in the published version of your app.

<figure><img src="https://2636455530-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F2wzy1sO41plYrfJfaAhN%2Fuploads%2FSJVxvAhsK3e8i7iRroUX%2FScreenshot_2023-01-18_at_15_44_36.png?alt=media&#x26;token=2369e0a6-064d-4f06-9048-fa6f0f25d0ce" alt=""><figcaption></figcaption></figure>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.appmachine.com/build-your-app/preview-your-app.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.