Best iOS video player apps for the iPhone and iPad
On top of that it supports every major format you throw at it, at up to 1080 definition if you have the latest iDevice, finds and shows subtitles in many languages, and hardware-accelerates streaming video wherever possible.
It also sports USB file transfer via iTunes, file management with "incognito" folders, Mail app video attachment playback and many more, so your money is well spent here. Some quirky high-res MKVs seem to give it the hiccups on anything less than iPhone 5 and the new iPad, but that can be said for most players that are not installed on the newest powerful gear
It has a lot of added value features, too, like the ability to play video attachments from the Mail app, as well as search and download from the web movies, TV shows and music directly from the player's interface, including saving YouTube vids offline. The newest version adds support for the larger screen of the iPhone 5.
Files can be imported for playback via iTunes, HTTP, FTP and WebDAV, the interface allows you gesture commands, there is folder management, video editing, and both wired and wireless TV-out from your iDevice.
The strength of the app, however, lies in the easy to set up client-server relationship, so you can run a small program on your computer, and stream any video file from there to your iDevice via Wi-Fi while lounging on the couch in the other room, or via 3G/4G anywhere in the world, really.