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Hearing Number is a public health education initiative called “Know Your Hearing,” launched by Johns Hopkins Bloomberg School of Public Health. Its core goal is to promote an easy-to-understand metric for describing and communicating hearing status: the Hearing Number. Clinically, it corresponds to the 4-frequency pure tone average (PTA4), indicating the softest speech sounds each ear can hear.
From an education/course perspective, this is not a structured course platform, but rather a combination of hearing-health education and self-assessment tools. The website explains what the Hearing Number means, why the left and right ears are recorded separately, how the number maps to WHO hearing loss grades, and encourages users to track it over time. Users can obtain their number through the official App, Mimi/Jacoti, Apple hearing test, or a hearing care professional. The project also targets healthcare providers, offering materials to help them discuss hearing issues with patients.
The main content does not specify a pricing model, nor does it mention certificates or accredited courses. The App is listed as available globally on iOS/Android, except in mainland China. Language support is relatively friendly, with English, Simplified Chinese, Traditional Chinese, French, German, Italian, Japanese, Korean, Portuguese, and Spanish supported.
Its strengths include strong institutional credibility, backed by a leading U.S. school of public health; the metric is based on the clinically common PTA4, making it easier to communicate with audiologists and doctors; and the content focuses on reducing stigma and supporting long-term health management, making it a suitable entry point for public hearing-health education. The limitations are also clear: the Hearing Number is explicitly not a diagnostic tool and cannot replace a professional hearing assessment; App-based testing can be affected by background noise, fatigue, headphones, and other factors; and the website lacks course pathways, assignments or interaction, a learning community, and a certificate system.
It is suitable for general users concerned about changes in hearing, people interested in healthy aging, hearing care organizations, and professionals who need to explain hearing status to patients. For users in China, the website content can serve as a public education reference, but the official FAQ states that the App is not currently released in mainland China and is planned to be rolled out by the end of 2025, so the mainland China user experience is partially limited.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on hearingnumber.org official site.
hearingnumber.org is an United States Health provider. TG4G tracks its product information, an overall rating of 5.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach hearingnumber.org directly.