U.S. iTunes pricing -- prices vary in other countries.

App Price

AudioTools $19.99

Module Price

FFT $19.99

ETC $9.99

Impulse Response $59.99

SmaartTools I $49.99

SmaartTools II TBD

Transmission Loss (STC) $9.99

SPL Pro $7.99

SPL Graph $9.99

SPL Traffic Light $7.99

Polarity $3.99

Speaker Distortion $5.99

Impedance (both) $19.99

STI-PA $299.99

VU Meter $2.99

THD+n $9.99

Phase Meter $7.99