I build Android Apps for Small Business. This is an app that my potential customers can download and use to checkout how the app works on their smartphone.
If you're a business owner, checkout this app or the YouTube link for a demonstration of the features and benefits.
I charge $299.00 for a fully personalized version or $149.00 for an app with your business information I find online.
Checkout my website http://www.mobile-smart-apps.com/ for more information and customization details.