Retinizer allows apps that aren't Retina-ready and are displayed pixelated at 1x to display their UI widgets at 2x. That way, only their custom images will look bad and not the whole app. To use it, just drag an app (and make sure it's closed) into the window and click the Retinize! button.
It also allows de-retinization of an app, in case it has problems in 2x mode. Just drag an app that you Retinized before and click the button below, which will now read De-retinize.
The app works per-user. That means, retinizing an app in your account will not affect the app in other accounts, where it will display at its
- Offers to close app before retinizing
- More bugfixes
- OS X 10.7 or later