Vast HTML

A great plugin for any great WordPress powered site. 
Its very often that you update your site, or decide to try new themes and make sure everything is 
ok before you want your visitors to view the site. Sometimes you want to stop them before the view your 
site while you are completing updates or even just getting the site started. This plugin will 
keep away the users you don?t want and do it with a great look that will get the visitors attention. 
This is a WordPress plugin on the file available on Theme Forest. You will need to purchase this plugin for it to work correcly. 
Plugin also has a updater to let you know when a new version is available.
Withoutreligion.com has very kindly offered to set up a full time demo of the site. 
http://withoutreligion.com/vinta_demo/

Vinta Construction

adds a splash screen to your site for construction or maintenance reasons. Has a configurable countdown.

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/

Vinta Construction vs WP Webapp