David, which model you use ?
you can use app to setup the tracker upload the location every 20 seconds, it is just 'real time'.
even you setup every 60 seconds or 30 minutes upload the location , it is still 'Realtime'
not sure about why there is 1/2-1 hour behind, pls let us know your tracker's IMEI# and email me at c.ma@ablegrid.com , I will take a look. thanks