A simple-yet-genius iPhone app, Instapaper lets users save magazine, newspaper and blog pieces for reading later in the day — like during a commute. Best of all, the app syncs with your web account so no matter where you find your content, it's all available in the app. Once you save a story to Instapaper, it downloads the text in an easy-to-read format that can be read even if your phone is offline without an internet connection.