I just made a project for my homedomotic thingie and I noticed there is a difference in the screen between my ipad2 and my iphone 5, both running latest ios. I have a local Blynk server running 0.7.4 on a Rasp Pi with openelec. Here are two screenies:
I think blynk isn’t a universal app, what you had on iPad is iPhone app running 2x mode. Though it’s kinda weird that there’re no 1x and 2x button on the screenshot.