Using iOS 7 on a 5s, Im not experiencing any of the crashing issues mentioned in the other reviews. I used to use Hipstamatic a lot, but I find myself using Oggl more now. I like the freedom of being able to switch films and lenses after Ive taken the shot. I dont lose as many shoots trying to flip through equipment and favourites now. I can concentrate on just taking a good shot instead of trying to remember what all the film/lens combos look like. Im not a fan of the import from camera roll either, but the imported photos are labelled as such, so its easy to make sure you only favourite the pure photos. I also think the deleting process could be improved, at the moment you have to go through one at a time instead of being able to select them from the grid/gallery view. I did have an issue when using my olloclip fisheye lens that customer service was quickly able to help me with. Turned out to be user ignorance actually: the viewfinder is off center from the actual camera lens and the olloclip housing was taking up a good portion of one side of my photos. I emailed customer service, Allen was quick to respond and informed me that I could move the photo around and reframe by accessing the cropping function in the editing window. Easy fix, and I was also informed that they are aware of the issue so Im guessing it will be addressed in a future update. Even though I think theres still a few improvements to be made, I gave 5 stars; Really good product that has improved with each update as well as fantastic customer service earns that extra star from me.