Picsew 3.5
We’ve found the Picsew app for iPhone and iPad invaluable for combining and modifying screenshots, and, most importantly, applying device frames to iPhone, iPad, and Apple Watch screenshots. It’s a free download in the App Store, with a $0.99 in-app-purchase to upgrade to Picsew Standard or $1.99 to upgrade to Picsew Pro. You need Picsew Standard for adding device frames, annotations, high-quality exports, and more, but Picsew Pro is necessary only if you want to make multiple screen screenshots by recording video rather than combining static screenshots.
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One of our favorite features of Picsew is that it can remove scrollbars and clean up the status bar in iOS screenshots.