We've been listening to your input, and this month Nintex delivers two enhancements to Nintex Mobile!
They are Forms Based Authentication (FBA) and Profiles!
The new FBA capability will let customers using it to log into SharePoint from Nintex Mobile. It's only for iOS and Android this month, but Windows desktop and Phone will roll out in the next release.
Profiles will allow you to build a profile within the app, and eventually multiple profiles.
Find out more in Daniel Stoll's blog post: Nintex Mobile introduces Profiles, and adds Forms Based Authentication support
Here are the Release Notes:
Here are the Help Files: