GPT Reader offers Free Trial, but Readvox does not.
Pricing details for both GPT Reader and Readvox are unavailable at this time. Contact the respective providers for more information.
Readvox offers several advantages, including Chrome extension tool, Converts text to speech, Naturally sounding voices, Preferred voice selection, Natural Voice option and many more functionalities.
The cons of Readvox may include a Limited to Chrome extension, No mobile application, Pricing not specified, Limited voice options. and No customer support indicated
