Per Diem Plus is an IRS-approved automated per diem and expense tracking mobile app designed exclusively for the transportation industry. It allows truck drivers to automatically track their IRS per diem, as well as to scan and follow their expenses while on the road. Drivers also can e-mail IRS-compliant per diem and expense reports and receipt images directly from their mobile devices. Per Diem Plus is a mobile platform that automates an IRS-compliant, record of per diem and expenses for OTR Truck Drivers and Fleet Managers for taxes.