★★★The best measurement result you get with iOS 6★★★

★★★Check out RTA Audio and Audio Audit on the App Store.★★★

★★★ Real-time analyzer - RESOLUTION 1/2 octave★★★

With this tool you are able to accurately analyze the quality of your audio system, find out which frequency your audio system emits in what strength. You are able to find the frequency weaknesses and then correct the setting of your equalizer.
RTA analyzes the signal from a microphone or line-in input.

★★★ Features ★★★

Resolution: 1/2 octave
Logarithm frequency scale
Linear frequency scale
Peak hold
Average curve of spectrum graph
Touch cross hairs function
Peak and RMS input meter
Input gain control

★★★ Recording specification ★★★

iOS audio session mode - measurement
Sample rate: 44100 Hz
Bit depth: 16bit
Channel: 1(mono)
Frequency range: 20Hz – 20kHz
Dynamic range: -100dB – 0dB