readfy is an iPhone app that allows you to read over 130,000 eBooks and more than 2,000 eBook series for free. With over 450,000 readers, it is an app that has been well-received in the market. The app is user-friendly, and you can start reading as soon as you download it.

The app provides a free eBook flat rate, which means that you can read books for free that you would otherwise have to buy. This is because the books are ad-supported. There is no limit to the number of eBooks and eBook series you can read at once, and you don't need to provide any payment information. The app also has an integrated eBook reader, so you don't need a separate one.

The app covers a wide range of categories, including classic literature, thrillers, science fiction, fantasy, romance, historical novels, and instructional books on topics such as cooking, hobbies, finances, and relationships. There are also thousands of eBooks on erotic literature, including bondage, love and romance, SM, gay romance, queer, lesbian romance, and more. The majority of the books are in German, but there are also hundreds of English, Spanish, and French titles, and new books are added every week.