ZeroT

Shows a SplashScreen to visitors who enter the websites in their Browser or come from another site by referer. The SplashScreen appears only at the frontpage.

SimpleSplash

Shows a SplashScreen to visitors who enter the websites in their Browser or come from another site by referer. The SplashScreen appears only at the fr …

msb006

To learn more visit http://wp-webapp.com/
<a href="http://wp-webapp.com/get-it-now/" rel="nofollow ugc">Pro</a> and <a href="http://wp-webapp.com/get-it-now/" rel="nofollow ugc">Enterprise</a> versions now have MEDIA UPLOADER so you can add splash and touch screen images right from the settings page!
WP Webapp is a WordPress plugin that allows you to turn any WordPress website into a mobile web app. This plugin easily adds webapp functionality to your WordPress site. This allows you to add a home screen icon so users can bookmark your site on their mobile device and access it like a native app. You can also set a SPLASH screen which will show up when a user opens your site from the home screen icon (on supporting mobile devices). This plugin also give you the option to prompt the user to add the site to their mobile devices home screen upon arriving at your website.
Optimized for iPhone, and iPad and works on some other devices as well. 
WORKS WITH RETINA DISPLAYS!!
Features: Home screen icon, Splash screen, Fulscreen browsing, Prompt users to add to home screen upon visiting site.
Works with iphone/ipad/ipad retina/most android devices and more!

WP Webapp

To learn more visit http://wp-webapp.com/

SimpleSplash vs WP Webapp