> For the complete documentation index, see [llms.txt](https://docs.klai.studio/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.klai.studio/cookbook-backlog/when-to-use-app-vs-model.md).

# When to use 'App' vs 'Model'

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Start here:

* [App Model](/reference/site-settings/app-model.md)
* [Data Model](/reference/form-settings/data-model.md)
* [Page Data Model Config](/getting-started/ide-quick-tour/environment/pages-deep-dive/page-data-model-config.md)