In addition to accessing your assets through the app's media picker, you can also take advantage of iOS's Drag and Drop feature. It allows you to drag images, video, and text from one app to another while using the iOS Slide Over or Split View mode.
For more information on how to use the iOS Drag and Drop feature, see this article.
If an image or video won't drag into your page as expected, check that you are attempting to place it into a page that allows for that content type (eg. Scrollmotion pages can only accept video files, so you would not be able to drag a photo into this kind of page). Also, only certain image and video formats are compatible with Ingage, so ensure that you are dragging in a compatible file type.
When dragging images in from a browser, be sure you have proper rights to use them in your stories. If in doubt, we recommend using our free stock content instead (which includes hundreds of thousands of high-resolution, royalty-free images and videos).