I wanted to upload photos from camera roll to make a time lapse... it’s possible, but not immediately intuitive... I paid 2 bucks for “wifi transfer” feature, fyi that’s not it : )
I honestly cannot remember how I found it, that’s how squirrelly OSnapLapseMotion is... bottom line, create a new project, snap some photos, then there is a grid icon that appears at bottom of screen, click on that... then on that screen you see setting (I think : / ) and eventually get to the option of “upload from camera roll”... click it, pay your dollar, then it’s bliss.
You can simply upload photos, click ‘play video’, adjust frame rate to your liking, then save the video to camera roll (you may need to pay 2 bucks for export ability.)
Anyway, it’s easily worth 3 bucks