Key Book English Class 11 PTB is a free Android application developed by Just Clack. It falls under the Education & Reference category and specifically the Books subcategory. This app is a comprehensive and revised book that covers everything that intermediate Part-I students need to know about English grammar and composition.

The app includes a list of all chapters, poems, and plays with questions and answers, making it an excellent resource for students to prepare for exams. Furthermore, the app also contains pair of words, moral stories, translations, letters stories, and application stories, which are all great additions to help students improve their English skills.

The app is subjective only and specifically designed for F.Sc, F.A, I.Com, ICS, D.Com, and DBA students. The English full book important notes for 11th class students are also included in the app. However, it is important to note that this app only covers chapters, plays, and poems, along with pair of words.

Overall, Key Book English Class 11 PTB is an excellent resource for intermediate Part-I students looking to improve their English skills.