Comment by andreif

12 years ago

I have only used it on iPhone 5 without any problem, so I am not sure what you mean here. I only use it for a few seconds to read the number and do not really understand how retina graphics would help you.

Not updating an extremely simple app with Retina support (which they've had at least three years to implement since the iPhone 4's release) would seem to indicate that it's not under any active development.