OI Avatar offers Free Trial, but Re:Eng does not.
The starting price of Re:Eng begins at $4.99/month, while pricing details for OI Avatar are unavailable.
OI Avatar offers several advantages, including Free to use, No credit card required, Intuitive interface, Suitable for beginners, Fast learning method and many more functionalities.
The cons of OI Avatar may include a Limited English accent options, No mobile version, Limited character length for scripts, Video upload only in PDF. and Three step video creation