Gitify - GitHub Notifications on your desktop.
Working Copy - The powerful Git client for iOS
Neat.run - Neat puts SaaS notifications in your menu bar. Streamline your code review and ship with ease. Preview, triage, and jump to issues in one click or keystroke.
CodeHub - CodeHub is the most complete, unofficial, client for GitHub on the iOS platform.
Meteorite - Smarter GitHub notifications.
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.