Narration Box offers Free Trial, but Realistic Text to Speech does not.
The starting price of Narration Box begins at $12/month, while pricing details for Realistic Text to Speech are unavailable.
Narration Box offers several advantages, including Over 20 languages, Audiobooks from ebooks, Host audio pages, Audio widgets, Podcasting capabilities and many more functionalities.
The cons of Narration Box may include a Podcasting feature not available, Widgets still in development, API pending implementation, Analytics feature coming soon. and subscription model unclear