An auto-tune effect would be if you were singing and you got off-key, and it automatically corrected it for you. Pitch correction is not actually an auto-tune effect.
It allows you to correct any pitch problems you may have with your voice and keep it in tune at all times. Auto-Tune is a pitch correction software that many singers and musicians have used to improve their singing. Pitch correction is a form of audio editing that allows you to change the pitch or tuning.
11 Readings that you may like: Is Pitch Correction the same as Auto-Tune?