I wish there was a reader app that was serious about text speech. This is not it, unfortunately. Reader apps need to focus on a text to speech experience that is identical to a music player so that you can use the app while in hands free situations. The app is also hard to use as a “read it later” tool on iOS.
I was really hoping they would fix these issues by now because it was promising. This app truly does feel like a portfolio demo app for a text to speech engine company rather than an actual reader app.
UPDATE: yes, I have actually used the app, no it does not work well. See replies for details.