Anyone running or know if an iPod touch will work other than music if I were download Nav free on one would it work on the appradio2?

Which model iPod touch do u have?

I don't I was thinking I could buy a second hand one if Nav would works as it's only Nav and music I use I thought if it worked could leave it connected all the time and then have my phone for calls via Bluetooth

All iPod touches don't have gps functionality. They are all wifi location based. There are 3rd party 30pin/lightning adapters that give the itouch true gps functionality but they are horribly buggy. Some are better than others, but it's still not as good as OEM. What you could do is get an iPad mini wifi+4g which has a GPS chip built into the mobo.

Will an iPod Touch be able to make use of the built-in GPS antenna of the Appradio?

Probably not since there is no onboard gps chip. Im not sure about 3rd party adapters. my guess is no

Thanks for the replies guys would the iPod work I I downloaded rout with Wifi before hand?

You'll have the map but no way to tell you where you are on it. No GPS, no dot on map to tell you where you are

Finally got round to buying a second hand iPod touch 3rd generation 32 gb connected it up altered the head unit to others as I am running an IPhone 5S but when I launch appradio it it says allow on my phone but then it doesn't launch.

Played around for ages to no avail just looked at the appradio in the app store and it says only compatible with iPod touch 4 gen is this correct, the iPod works for music by the way

The iPod touch 3rd gen work perfectly with appradio gps antenna, sometimes when you connect to the radio not fixiing gps signal, reboot the iPod and it return to function correctly! I not know the cause....

I have try it with app radio sphda01 and sphda100.