With DRImagePlaceholderHelper you can easily create UIImage placeholder like this:
At first you have to import the Framework
#import "DRImagePlaceholderHelper.h"
To get a placeholder image simply do: (100x100)
UIImage *placeholderImage = [[DRImagePlaceholderHelper sharedInstance] placeholderImageWithSize:CGSizeMake(100,100)];
Or fill a UIImageView
[imageView fillWithPlaceholderImage];
There are also options to customize the fill color & the text inside the image
For more information take a look at the example project.