I'm using qDslrDashboard 3.5.1 on an iPad iOS 9.3.1 with no problems so far. :-)

RE qDslrDashboard ... complete control including LiveView. Works a treat.

I'm using an iPad Air and sometimes an old iPod, and using the qDslrDashboard app for tethering a D7200 via WiFi or USB. No problems so far (and much better than Nikon's WMU app).