The 1.3 version of CropaRatio for Mac was available as a free download on our website. This free Mac application is an intellectual property of DARE Software. The application is included in Design & Photo Tools.
From the developer:
CropaRatio allows easy cropping against a white background. It displays the height/width ratio as you drag across an image and then lets you move the cropping rectangle around. It also allows the print size to be adjusted. Cropped images are saved as .jpg files. Rotated versions of an image can be created.
You may want to check out more software for Mac, such as Cuadro or Resize Now, which might be related to CropaRatio.