How to Control What Apps Can Access Photos on iPhone & iPad
iOS allows users to control what apps can access the images and photos stored on their iPhone, iPad, and iPod touch. This is handled through the Privacy settings and offers granular control over which specific third party applications are allowed to pull images from the Photos app, Camera Roll, and also whether or not they are able to save new images to the on-device storage within Photos app as well.
If you want to adjust or control app access to photos on an iOS device, or you just want to see what apps could theoretically access your devices pictures and save to the on-device image library, here what you’ll want to do.