Our company has just launched a mobile app (itunes.apple.com/us/app/city-nomads-mobile/id875754560?ls=1&mt=8). We want to post an interstitial banner (320 x 480 px JPG or PNG) to our mobile website so that visitors will see this banner and hopefully click to download the app.
It should be tasteful and representative of our brand (citynomads.com).
It should also ideally highlight some of the key benefits of the app without being too wordy (see attachment).
Looking forward to hearing from you!