Is there an iOS timelapse app that saves frames to camera roll? I'm looking for an app that will save individual frames to the camera roll as it goes, at something like a 1-5 second interval. I'm having trouble finding any apps that don't expect you to use them to make the final video; I'd rather do that at home on the computer where I can use the images along with the ones off the SLR.
The pro version of Joby's camera app "GorillaCam Pro" will do this.