Neither ButterReader nor Wavflow offers a free trial.
Pricing details for both ButterReader and Wavflow are unavailable at this time. Contact the respective providers for more information.
ButterReader offers several advantages, including Transforms text to audio, Customizable audio widget, Diverse voice options, Adjustable playback controls, Promotes multitasking and many more functionalities.
The cons of ButterReader may include a Limited to blog content, No language translation, No offline listening, No natural human voice. and Leaderboard bias
Wavflow offers several advantages, including High accuracy results, Realistic human-like voice synthesis, Intuitive user interface, No subscription required, Credit based system and many more functionalities.
The cons of Wavflow may include a Credit based system, No subscription option, May be expensive, Potentially limited voice options. and No API mentioned