We experienced a few hiccups with app wrapping of policies (e.g., adding crash logging) when we replatformed onto Xamarin, but the Apperian team was very responsive and put in the extra effort required to get critical issues addressed before our launch.

• API
• Mobile SSO
• Enterprise Security Management
• Better support for Office 365 integration would help improve it further.

I know there is always room for improvement but Apperian really makes every effort to ensure we are successful.  

We had an issue with deployment with Android apps, which require an expansion file.