Radio Nav Aids is an aircraft radio navigationinstrument simulator. A huge world wide database of DME's, VOR'sand VORTAC's is built in. Both a VOR (VHF Omni-directional Range)and HSI (Horizontal Situation Indicator) can be simulated. Bothalso have a classic 7-segment simulated DME (Distance MeasuringEquipment) displayed consisting of slant distance, groundspeed andETA. The simulator utilises GPS and the device's magnetic compassto accurately display the VOR or HSI magnetic radial (corrected forthe local magnetic variation).

The simulator is intended for training purposes only and mustnot be used for actual aircraft navigation. It is ideal forlearning how the VOR and HSI work in convenient location other thanan aircraft cockpit.

For evaluation a trial version of this app is available fordownload which is limited to displaying the simulated radionavigation aid instrument for 45 seconds only before returning tothe main selection screen. Ads are also shown on the selectionscreen. The full version does not have ads or the timeout.

The trial version is available here:
https://market.android.com/details?id=com.horizonsaviation.radionavaidstrial