When comparing CodeHub vs Working Copy, the Slant community recommends Working Copy for most people. In the question“What are the best GitHub clients for iOS?” Working Copy is ranked 1st while CodeHub is ranked 5th. The most important reason people chose Working Copy is:
Works with any Git remote, not just GitHub. Clones to device letting you work offline and push when convenient. Extends your other applications with iOS 8 app extensions.
Ranked in these QuestionsQuestion Ranking
Pro Open Source
CodeHub is an open source project hosted on GitHub itself. As such, it's driven by the feedback from users themselves and is constantly under change and improvements.
Pro Almost at feature parity with GitHub
CodeHub is almost at feature parity with Github.com itself as it supports the most major and widely used feature of GitHub. It has full support for issues, pull requests, notifications and repository management.
Pro Not just GitHub, works offline
Works with any Git remote, not just GitHub.
Clones to device letting you work offline and push when convenient.
Extends your other applications with iOS 8 app extensions.
Pro Allows other apps to access files
Working copy integrates with other apps to allow them to access and edit files through iOS8 document picker.
Pro Frequent updates by the developer
Supports latest iOS features.
Pro Markdown support
Displays a preview of markdown files without external apps
Pro Clean UI
Con Some features need in-app purchase
CodeHub is mostly free, but for push notifications and for GitHub Enterprise support users need to purchase these features for $1.99 and $0.99 respectively.
Con Push is considered premium
The "free" version is not very useful if you can't do a push and $15.99 seems way overpriced for basic functionality. Limiting the amount of manageable repositories to 2-3 could be a solution here.
If you want better features you will have to pay.