Readdle has been a prominent company when it comes to business and productivity applications for both the iPhone and the iPad. They've grown popular with their steady stream of useful, intuitive applications. For the latter device mentioned above, you can pick up a copy of one of their best utilities for over half off of its normal price. Remarks has been marked down from $4.99 to $1.99.
On Monday, Wolfram Alpha, the online computational knowledge engine that launched in May, saw its application become available in the App Store. Per MacRumors, the app "plugs directly into Wolfram|Alpha's supercomputing cloud to deliver the unrivaled power of the Wolfram|Alpha knowledge engine to the mobile environment." While the app still requires an internet connection to work, it includes a special keyboard to make the entry of special characters for mathematical and other functions easy.