> For the complete documentation index, see [llms.txt](https://docs.nosto.com/techdocs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nosto.com/techdocs/apis/graphql-an-introduction/graphql-for-ios-and-android.md).

# For iOS & Android

GraphQL is a query language for the APIs for getting your data. It is an alternative for the REST APIs. It is not specific to a single platform and works for all type of clients including Android, iOS or the web. It stands between your server and client and helps you to query your data in a more optimized way.

## Building for Android

If you would like to leverage Nosto's intelligence engine in your Android app, please see our example app and the docs.

* [Android Example App Code](https://github.com/Nosto/example-android)
* [Android Example App Docs](https://github.com/Nosto/example-android/wiki)
* [Apollo Android Guide](https://www.apollographql.com/docs/android/)

## Building for iOS

Leveraging Nosto's intelligence engine on iOS is just as easy as on Android. While an example app is yet to be provided, please read the Apollo docs.

* [Apollo iOS Guide](https://www.apollographql.com/docs/ios/)


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# Agent Instructions
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## 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, and the optional `goal` query parameter:

```
GET https://docs.nosto.com/techdocs/apis/graphql-an-introduction/graphql-for-ios-and-android.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.