NaturalReader works on phones, in the browser and through a Chrome extension, reads far more languages, and has commercial plans for voiceover work. If you listen mostly on your phone, or need a language VoicedByMe doesn't read, like Hindi or Arabic, it fits better.
VoicedByMe is for people who read on a Windows PC or a Mac and want natural voices without a meter running. You can still take audio to your phone as an audiobook or a saved clip.