> For the complete documentation index, see [llms.txt](https://docs.ottpay.com/payment-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ottpay.com/payment-api/in-app-union-pay-secure-pay/code-samples-web-app-android-ios.md).

# Code Samples(Web App, Android, iOS)

## :white\_check\_mark: Code Sample - Web App

{% file src="/files/-M8XJVXnUZxT5wkMjOXS" %}
Download Code Sample - Web App Demo Project
{% endfile %}

## :white\_check\_mark: Code Sample - Android App

{% file src="/files/-M8XEBNQ8usZcsTJpZoL" %}
Download Code Sample - Android App Demo Project
{% endfile %}

## :white\_check\_mark: Code Sample - iOS App

{% file src="/files/-M8XF-0fsTSZxM2Nctrx" %}
Download Code Sample - iOS App Demo Project
{% endfile %}