Free Lite version of SGenerator
A high-quality signal generator for the iPod Touch/iPhone/iPad with wide frequency range (1 Hz - 20000 Hz).
Create sine waves, triangle waves and white noise.
You can:
• testing speaker systems
• balancing home theater speakers levels
• testing and tuning audio amplifiers, equalizers, crossovers and many other equipment
Internal oscilloscope and level meter for better clarity.
Generator is accurate, reliable, precise, and clean.

Note that non-sine waves have perceived transient processes that some distort ideal output from above about 1400Hz.