The application is easy to use.

I think it's a good solution for selling audiobooks.
Among the features I like:
- Users can listen to the book offline, without being able to download it for sharing, for example.
- PDF notes can be added to accompany the audiobook, enabling me to send readers back to view tables and graphs that are difficult to transcribe via audio.
I can sell my audio book via stripe.

So it's a great tool for selling audiobooks. For podcasts, however, there are more suitable apps on Appsumo.

Many users are dissatisfied because of the many limitations compared with the subscription-based versions. It's true that it's a bit frustrating, but I tend to qualify that because you can already market audiobooks easily and effectively for an unbeatable price.

On the other hand, I'd put 4* and not 5*, because the basic information is not translatable into the main non-English languages (such as French), even though it doesn't require any major development.

All in all, a good application, with a few useful improvements that could enhance the user experience.