Narration Box offers Free Trial, but ttsMP3 does not.
The starting price of Narration Box begins at $12/month, while pricing details for ttsMP3 are unavailable.
ttsMP3 offers several advantages, including Free use, 28 languages supported, Multiple accents available, Online listening available, Converts speech to MP3 and many more functionalities.
The cons of ttsMP3 may include a Limited to 3000 characters, No offline functionality, Limited language accents, Choppy voice transitions. and Additional features require learning
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
