Any company use the Linxup GPS/IFTA device on their trucks?

Hi guys,
We are looking in a GPS device to put on our truck that will calculate IFTA for us that is DOT approved and i came across this little device, LINXUP. Have anyone of you guys use their services to track your trucks? Do you use the IFTA add on feature? If you dont, what do you use? And how has it been working out for you? https://www.linxup.com/

Thanks guys.