simple to use

Simple iPhone simulator screen-capture application.

Simple diary application.

Simple diagramming app.

Simple RSS reader.

Simple music controller for Spotify and other streaming apps.

Simple timer and stopwatch utility.

Simple and funny way for all ages to learn touch typing.

Simple and reliable Last.fm scrobbler.

Simple personal finance for your Mac and iPhone.

Simple, efficient, flashcards that let you study at your pace.