Not often you hear an audio engineer and producer recommend an image editing app; perhaps this is a first? As part of the ToKwerX clean install and OS X upgrade process I needed to upgrade to new versions of non-audio apps, namely an old PPC version of Photoshop. With Adobe's recent decision to make their creative suite a subscription license there was little reason for me to sign up, given I only use their apps to prepare graphics for website, logos, branded documents etc. I'm not a photographer.
Enter "Pixelmator" by Apple. I am going to whole-heartedly recommend "Pixelmator" for all the less-than high-end graphic and photo requirements. You want to know the best part? It's $16 AU. Yep, that's not a typo; $15.99 Australian dollars. Just get it folks. It's one of those No-Brainer purchases for a Mac owner.