Skitch

Quick image capture and annotation

Description

See something that sparks an idea? On an image, a pdf or a website? Skitch lets you point to it with its drawing tools so that you can circle or point to what's important. You can also highlight text and add comments. Add images to annotate directly from your camera roll and mark up web pages without leaving Safari using the Skitch iOS extension. 

Skitch is made by Evernote. Support for Skitch on Android, Windows Desktop and Windows Touch has stopped on Jan 22, 2016, but remains available on Mac, iPhone, iPad and iPod Touch.

Price
FREE

Completely free :)