You're seeing the VFR version of VNAV that Dynon provides. This is a "glideslope" that can be coupled to the autopilot if you have one, or handflown, and provides a 2-degree descent rate to traffic pattern altitude of your destination airport. It looks identical to a glideslope presented from an IFR navigator, but provides no guarantees of airspace or obstacle clearance and should be used as a VFR situational-awareness tool only. If there is a mountain between you and the airport, this glideslope will happily fly you right through that mountain on the 2-degree descent.
Go to the user manual and search "vertical navigation".