custom mobile application

Hello All, 

As per the link, it seems that Appian Provide Custom Mobile development. Where can we get more information regarding how to develop a custom mobile applications. Does Appian provide some IDE and SDK for custom mobile application development. 

I am aware of the fact that applications created on the web using the Appian Designer platform can be view on Appian App available on Play Store, but what about if some want to create the only app for Mobile applications. 

Additionally, can we create our own apk and IPA for Android and iPhone, later can we publish this to app stores. 

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