Good points about Evernote - I'm not sure what went into their decision to support iOS 7 only, but I'm sure they considered it.

"I guess I was lucky that I still had it on my phone cause otherwise, I would be left without the ability to install it now."

That's not entirely true any more - Apple is now allowing users to install the "last compatible version" of apps. More on that from Engadget: http://www.engadget.com/2013/09/17/apple-ios-last-compatible...