2K for Iphone

Ultrakam is a new app that enables 2K film resolution, timelapses, and slow motion video recording on your iPhone.

It can record video 70% more pixels than HD at 24fps 2240x1672*, capture high quality timelapses at 2592x1936* in any custom interval, and record up to 10X* slow motion videos, all this while easily switching between M-JPEG or H.264 iFrame codecs for an "uncompressed" footage experience. Bring your iPhone Filmmaking one step closer to High End.

You can get it from here