Slave Uno to MKR1000?

I am trying to control a bunch of devices through an app on my phone. I was planning on using the MKR1000 to connect to my phone via wifi and then use that to control an Uno that would run the device. Is that possible or am I going about this the wrong way? Thanks.

No reason not to just use the MKR1000 for controlling the devices.(except for the fact that it is 3.3V only) Or use an ESP8266 for wifi ($3).