NewTone is described as 'Pitch-correction and time manipulation editor that allows to slice, correct, edit vocals, instrumentals and other recordings' and is a music production app in the audio & music category. There are seven alternatives to NewTone for a variety of platforms, including Windows, Mac, iPad, iPhone and Linux apps. The best NewTone alternative is Auto-Tune. It's not free, so if you're looking for a free alternative, you could try Voloco or x42-Autotune. Other great apps like NewTone are Celemony Melodyne, AudioKit AudioTune, Revoice Pro and GSnap.
gsnap doesnt even have the manual pitch correction that newtone has...its all automatic and doesnt do that great of a job.