Gabe Weatherhead at Macdrifter highlights something that puzzled me when I wrote a roundup of screenshot apps last December:

While there’s a wealth of options on the Mac for image annotation, there are very few complete options on iOS. PointOut is wonderful for creating magnifier callouts but not much else. Pinpoint has really easy redaction, annotation and arrows but nothing more. Omnigraffle has everything plus a great deal of control but it’s too many taps to do anything basic.

The problem is compounded by the fact that many screenshot apps on iOS are unable to detect a screenshot once it has been edited by another app. As a result, there is often no good way to pass a screenshot from one app to another to apply multiple edits.

Gabe’s solution is clever. He uses Pixelmator, one of the most powerful image editors available on iOS, to create call-outs, redact sections of a screenshot, and draw arrows. I use Screenshot++ and Pinpoint regularly, but it’s good to have Pixelmator as an option for more complicated combinations of edits. Check out Gabe’s post to see how it’s done.