Thank you for your support @jacksonizer, really appreciate it! 👍

Is it already functional?

Yes, it is.

Can I try it on my mobile phone?

Yes

where to download it?

HiveAuth is not an app to download. But you will need Hive KeyChain on your mobile. You will find links to download it on https://hiveauth.com
Then you just have to use an HiveAuth compatible applications like https://peakd.com or https://hive.blog