The stories are all fictional (I thought they would be taken from the stories of the Sahaba or from Prophetic hadiths themselves) but they are interesting for children. However, I noticed the actual hadiths on my iPhone are not correct. The words in Arabic at the end of each tale are jumbled and therefore not accurate. Also, I found the meanings of the hadith and the author's attempt to connect them to fictional stories were sometimes weak, or not as relevant as I would have hoped. I received my undergraduate training in the Hadiths sciences and therefore can realize these points.
In sum, the author has a good idea of trying to introduce stories with morals to children and adults alike. I would recommend this ebook but just take note of the Arabic hadiths at the end and verify the Arabic before quoting them.