Sparrow’s desktop email client for OS X includes a great UI and a number of great features such as multiple accounts, a unified inbox and a user-friendly layout. The company on Thursday brought those same attributes to Apple’s iPhone, iPod touch and iPad with the release of its much anticipated iOS app. Much like the desktop version, Sparrow’s mobile app features a simple, Facebook-like design that is light, responsive and easy on the eyes. The iOS app supports iCloud, Gmail, Yahoo, AOL, and other IMAP services, however it does not support POP accounts or push notifications. “If Sparrow was to do Push today, we would have to store your credentials (login/password) on our servers to frequently poll your accounts, and send you notifications,” the company said. “This is a responsibility we’re not ready to take. As a startup focused on iOS/OS X development, we do not have the skills to secure your data on our servers and we do not want to put sensitive information at risk. That’s why Sparrow iPhone 1.0 doesn’t do push.” Sparrow’s mobile app requires iOS 5 and can be had for $2.99 in Apple’s App Store. A video of Sparrow’s new iOS app follows below.