Narration Box offers Free Trial, but Speechelo does not.
Pricing for Speechelo Starts at $27/month whereas for Narration Box Starts at $12/month.
Speechelo offers several advantages, including Over 30 voices, 24 languages, Adjustable tones, Automatic punctuation, Text-to-voice in 3 clicks and many more functionalities.
The cons of Speechelo may include a Only 30+ voices, Requires internet connection, Limited to 700 words, Inadequate customization. and No free version available
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