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I didn't integrate it fully yet, there are still a few things I need to do first, like storing / restoring sessions if they didn't expire yet, broadcasting of transactions and a few UI related things. But after I finished that it will go live on https://primersion.com for broadcasting witness vote transactions through HiveAuth. I will be explaining details in an updated post once it goes live.
Additionally I am currently developing another app, which will include it as well, but I am not sure when this one will be released.

Thanks! This post was very helpful combined with the HTML example here: https://github.com/hiveauth/hive-auth-html. The HTML example shows how to listen for auth_ack events and generate QR images.