There are many places where one can find about the zaeef hadith. But we have uploaded this book on play store so that people who find it difficult to get Islamic knowledge (books) can read about it. Especially those people who live in America, England, Australia, Brazil and other places where Islamic books are not easily available. This hadith collection book is written in Urdu and is available as open source - permitted by the publishers - courtesy Kitab o sunnat
This is a very beautiful and informative Islamic app which provides us the real meaning of Hadees and also let us know about the difference between strong and weak Ahadees.