> For the complete documentation index, see [llms.txt](https://docs.streamavatars.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.streamavatars.com/lua-scripting-api/api-reference-and-tips/global-functions/getapp.md).

# getApp

```lua
return function()
    local app = getApp();
    app.setResolution(900, 900); --sets the app window resolution to 900 by 900
end
```

{% hint style="info" %}
Setting the resolution is a very niche function, but you can discover more about the app class by clicking below!
{% endhint %}

{% content-ref url="/pages/54qAyyPifFfXaidcliRK" %}
[App](/lua-scripting-api/api-reference-and-tips/classes/app.md)
{% endcontent-ref %}