I have all the IPhone apps, really...yeah its a sickness! Got burned out on endless choice. Since Oct 2015 most of my iPhone pics have been taken with Shakeit.
I leave it on the setting that doesnt save an original file. I had an SX-70 back in 78 or so.... Trust me, this is close enough to the real deal.
Its liberating!
LarryKen about ShakeItPhoto, v3.1.1