This is just a key not an App. So you won't be able to run it. Instead, you need to download Button Savior first before buying the key to work.

Please try before purchase and download the free version (Button Savior) first to make sure it works 100% on your device!

Top 1 Software key App on Android MarketTop 10 Must have app for root devicesTop 1 Must have app on HTC HD2Top 1 Software key app with best customization featuresWorks from 1.5 to JellyBean

What's added in PRO??☆ Swipe to show Button Savior panel from both sides of screen☆ Able to rearrange Button order to your liking☆ Able to hide/show any button☆ Able to assign shortcut on Camera/Call key (Will expand the support list later)☆ Ads removal