> For the complete documentation index, see [llms.txt](https://deplyr.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://deplyr.gitbook.io/docs/use-app-versions.md).

# Use App Versions

## Purpose

With app versioning, you can safely make changes to your application without worrying about disturbing other users workflow. Preview any version before publishing it.

## Usage Tips

* If you prefer to work on a larger area, go to "<https://app.deplyr.com/app/\\>\<app\_id>.preview/" and refresh the page once you save updates in Deplyr. It will automatically update the "preview" version to the one you just saved.
* You can view any version of your app by changing the value after the periond in the URL. For example, this would fetch version 4: "<https://app.deplyr.com/app/\\>\<app\_id>.v4/"

<figure><img src="/files/qmu9pYEuwZxPPClx3HrY" alt=""><figcaption><p>Deplyr in-app version control</p></figcaption></figure>