Whatishearing describes the anatomy and physiology of the human ear, the difference between objective and subjective hearing, how hearing is measured and what constitutes normal and impaired hearing. Since hearing is unique whatishearing also offers a free online hearing test and a free short report based on that test. Visitors to the whatishearing site are also offered the opportunity to upgrade their free short report to a full personalised report. The whatishearing full personalised report contains approx 50 pages of information and advice including sections on tinnitus, hearing aids and the pros and cons of getting help privately or through the NHS.