One of the tasks that iOS developers often are confronted with is the creation of multiple device-specific versions of their images. For example, if you develop an iPhone app, then you need high-resolution versions of your images for the iPhone 4 as well as ‘normal’ versions for the previous iPhone models.
Rapid Resize helps developers with this task: It lets you define multiple device-specific versions, incorporate scaling factors, process batches of images with a single action, and apply smart file naming.
Rapid Resize has saved me many hours of work. Hopefully it can save you time as well!