I think it would make a lot more sense to integrate this into the editing stage of the main app. While theres may be an more official product, it is still just an addition to the sea of other "pic-stitch" type apps.
It might prove to be a challenge for the user to not only select the photos but also compose and arrange them in a layout. Currently there is a pain point for me when selecting photos (already on my phone) and viewing them in the "editing" view.
I agree there could be a resolution to incorporate both experiences. But the primary app would have to change.
I agree 100%. I don't understand why companies make additional apps for their own apps. While I understand they probably want to keep the interface clean and simple, there has to be a better way to integrate this feature into existing app.