Splashtop is an app to connect from an iPad (or iPhone) to a Mac/PC that are in the same WLAN; real internet access is available for a monthly or annual fee. Splashtop is robust and fast. Of course it does not replace a full fledged desktop environment, but it gets the job done if you don’t have physical access to your computer. Small control elements, like in Aperture above, can be zoomed with spread and pinch gestures.
Animoog is a unique synth app for iPad and iPhone. Usually you are overwhelmed by zillions of knobs and dials of emulated synthesisers. Not in Animoog because the app has a clear layout and navigation structure, and it comes with a impressive amount of presets that take you straight to playing sci-fi sounds on the keyboard. Mind your fingers! – the sound depends where you hit the keys and how you slide horizontally and vertically. Surprising enough, the small screen real-estate of iPhones is no limit, because the whole screen can be used for sliding tones!