I’ve been using the app for a couple rides just to log the ride and add info for Polaris to ass my trails to their database. I stumbled across this Link dongle that plugs into your RZR in that pigtail under the center stack. It links to your smartphone so that you can use RiderX offline maps and get a readout if what your RZR is doing. Basically give you gauges in your smartphone. $300 seemed steep to me, but if it worked well, might be worth it.
Here’s the link to the Link (get it?)
https://www.riderx.com/en-us/link