Keynote for iPad and iPhone

The mobile version of Apple's presentation app continues to improve on the iPad, but you'll struggle to use it on the iPhone's smaller screen.

Microsoft PowerPoint for Mac 2011

By combining compelling new features with a revamped interface, PowerPoint 2011 makes it easier than before to develop dazzling presentations quickly.

OmniFocus for iPad 1.0.2

If you’re already using OmniFocus productively, the new version is well worth $40 to manage your tasks on your iPad.

Keynote 1.0 for iPad

Keynote for iPad is a good value as a standalone tool. But as a complement to the desktop version, Keynote for iPad is disappointing.

The Elements: A Visual Exploration

Whether you’re a chemistry whiz or you can’t tell antimony from argon, The Elements is worth every penny.