2023-08-31 00:00:00 With an end-to-end preparation model, Testbook brings another treat for its readers with this CISF Head Constable - Testbook App. We aim at providing the best learning experience to the aspirants of this CISF Head Constable exam and help them with their selections. This app has been designed keeping in mind the requirements and the CISF Head Constable exam pattern. Apart from the subject-specific notes, we also offer various practice and reading material with downloadable PDFs.