The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From G.P. Imports:
The best battery app ever!This battery app has so many features that we know you will not read them all (you'll get bored). The only thing we assure you is that we added the best features from all similar apps and mixed them into one single battery app. Finally the perfect app for optimizing battery life! With this very handy and accurate app you can now: - Monitor expected battery life; for multiple uses. Among these: Standby time Recharge time 3G & 2G talk time Internet use Gaming Video recording Photo capturing Audio video and YouTube playback Bluetooth audio -Customize the look from a large library of images or even from your very own! -Get the best tips for optimizing your battery life and making it last longer!