The user manual can be viewed here on the website or can be downloaded as PDF file for offline reading:
Audio Evolution Mobile User Manual for iOS.pdf (rev 1.04, around 52MB)
Audio Evolution Mobile User Manual for iOS (online)
The user manual can be viewed here on the website or can be downloaded as PDF file for offline reading:
Vocal Tune Studio User Manual.pdf (rev 1.00, around 12MB)
Vocal Tune Studio User Manual (rev 1.00 online)