If you're looking for an app to break from the generic, tried-and-tested mold, you needn't look much further than Compasso Synth by Rubyjock, which turns your iPhone's compass into a synthesizer. By tweaking the three main options - resonance/cutoff, LFO Rate, and oscillator detuning, you can produce some epic sounds, and each depends on which way you decide to tilt your device.
