Needs work - might be useful
Caveat: I only used the aiming tools so far. Using an iPhone 6, iOS 8.3 Tested v1 of app, six days after release. Interfacing with an Explorer 510 terminal. Selecting different functions in app caused an apparent crash and restart (?) - perhaps the phone just goes black and then shows the desktop before showing the new screen? Buttons in aiming app were slow to respond or completely unresponsive. Killing the app and relaunching, navigating to the aiming function and then pressing the connect button (for instance) seemed to help, but far from ideal. I'll be trying the SIP features soon and reporting back if possible. Based on this feature's performance, I recommend aiming via browser interface, but keep an eye on the app for improvements. I see potential.