There is AudioBook Mastering Suite 4.

The forum version is now a bit more advanced compared to the tutorial version. I need to conform them.

All these works assume you can read aloud in an enjoyable manner. If, when you read, people run away with their hands over their ears, nothing we do is going to help.

It is stated that Technical Compliance is only one of the two acceptance tests. The other is Human Quality Control where a real human listens to the work. This is where it dies if you got to technical excellence by beating your bad recording with a stick. Don’t bother submitting work that sounds crunchy or like a bad cellphone.

The goal is to sound as if you were telling somebody a story over cups of tea.

If you fail ACX Check, the next step is likely to be submitting a sound test to the forum. There is a convenient format for that, too.