It has a fully feature integrated syntax highlighting editor, a built-in GUI form designer, graphics and media libraries for games, an integrated debugger, custom keyboard, a selection of Python third party modules such as scipy and Matplotlib, all the standard Python docs and tutorials and included module docs, full integration with share sheets, notifications, widgets, it's a universal app for iPhone and iPad, it integrates with the Github client apps such as Working Copy and it has built-in iCloud syncing for script folders. Compared to pretty much anything - honestly.