Billings Touch is a time tracking and invoicing application for the iPhone, designed for standalone use – or as a companion to Billings on the Mac. Create clients, add new projects, and track time when you're mobile. Invoice your clients straight from your iPhone – or sync over WiFi to Billings on your Mac. Also keep track of mileage, expenses, and client payments. Billings Touch lets you invoice like a pro, even when you're mobile.