Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.

Working Copy - The powerful Git client for iOS

Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.

CodeHub - CodeHub is the most complete, unofficial, client for GitHub on the iOS platform.

Pomodone - Pomodone is the easiest way to track your workflow using Pomodoro technique, on top of your current task management service.

Git Flow - Git Flow is a very self-explanatory free software workflow for managing Git branches.