Dong Li has AVPlayer Plus Pro (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store for FREE (regularly $2.99) for a limited time.

AVplayer Plus can play almost any video format without the need for you to manual convert your videos. Just drag and drop your video into the AVplayer’s Medias and watch on the go.

Support formats include avi, mkv, ts, mov, vob, mp4, mpg/dat, 3gp, rmvb/rm, wmv, flv, OGG, Flac, ape, AAC(M4A), WAV, mp3, wma, and more.