WPtouch ProTM is a premium plugin which adds powerful, easy-to-use features to WordPress for mobile + tablet theme support. It’s also a powerful theming framework, perfect for creating awesome mobile & tablet optimized versions of websites.
It works by detecting mobile devices like iPhones and Blackberry and automatically presenting your website in a dedicated mobile theme instead of your regular desktop theme.
The cost of this premium theme is $36 per single site license and $69 for 5 sites license. They also have a FREE version which we have not tried.
To learn more visit https://www.bravenewcode.com/store/plugins/wptouch-pro