HearWHO app shows low diagnostic accuracy for hearing loss compared to pure tone audiometryApp based hearing tests show low accuracy in rural clinics

Frontiers in Medicine Published September 8, 2026 DOI ↗ Editorial oversight: Dr. Lars van Dijk, PhD · Surgical, Procedural & Diagnostic

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Key Takeaway

Note the low sensitivity (0.45) and specificity (0.11) of the HearWHO app in this rural Tanzanian setting.

This observational study evaluated the diagnostic performance of the HearWHO app, which utilizes digits in noise (DIN) testing, compared to standard pure tone audiometry (PTA) in a rural, low-resource outreach clinic in Tanzania. The study included 52 patients with ear-related problems to assess the utility of mobile technology in hearing screening.

The findings indicate poor diagnostic performance for the HearWHO app. The reported sensitivity was 0.45 and specificity was 0.11. The positive predictive value was 0.53, while the negative predictive value was 0.08. The overall accuracy of the app was 0.35. These metrics suggest the app may not reliably replace standard audiometry in this setting.

Limitations noted by the authors include the impact of language and familiarity with smartphone technology on test uptake. The study's small sample size and specific rural setting may limit the generalizability of these findings to other low- and middle-income countries. These results highlight the need for co-designing mobile health tools with local communities to ensure clinical utility and cultural appropriateness.

When people in remote areas struggle with hearing loss, doctors need reliable tools to diagnose the problem. Researchers tested a mobile app called HearWHO to see if it could work as a practical tool in a rural clinic in Tanzania. They compared the app's results against a standard hearing test called pure tone audiometry.

The study of 52 patients found that the app did not perform well. It had a sensitivity of 0.45 and a specificity of 0.11. The overall accuracy was only 0.35. These numbers suggest the app struggled to correctly identify hearing issues compared to the standard method.

Some of these results might be linked to how comfortable patients felt with smartphones or the language used in the app. Because the study was small and took place in one specific location, the results might not apply to everyone. The findings suggest that apps need to be designed alongside local communities to be truly useful.

What this means for you:

A mobile app for hearing tests showed low accuracy in a rural setting, highlighting the need for better local design.

Common questions

How accurate was the mobile app compared to standard tests?

The app showed low accuracy in the study. It had a sensitivity of 0.45 and a specificity of 0.11. The overall accuracy was 0.35. These results suggest the app was not as reliable as the standard pure tone audiometry test for diagnosing hearing problems in this setting.

Why did the app perform poorly in the rural clinic?

The study suggests that the app's performance might have been affected by the language used and how familiar patients were with smartphone technology. Because the study was small and conducted in one specific location, the results may not apply to all populations.

Study Details

Study typeSystematic review

EvidenceLevel 1

PublishedAug 2026

View Original Abstract ↓

BackgroundShortages in Ear and hearing care (EHC) workforce, including audiologists, is one of the leading barriers to accessing EHC in LMICs. App-based hearing assessment tools have been developed to help bridge this gap by providing low-cost access to hearing screening. A review of hearing assessment apps reported sensitivity values ranging from 0.982 to 1.00, however, studies focussed on high income populations. The hearWHO app uses Digits in Noise (DIN) testing to indicate speech recognition thresholds (SRTs). Since its launch in 2019 it has been used extensively around the world, however, uptake has been comparatively low in the global south. This study aimed to explore the utility of the hearWHO app in a low resource setting in rural Tanzania.MethodsA total of 52 patients self-presented to ear, nose and throat (ENT) outreach clinics with ear related problems over a 3-day period in Huruma hospital in the Rombo district of Tanzania. All patients underwent clinical history and examination with 29 additionally completing pure tone audiometry (PTA) and an app-based digits in noise (DIN) hearing test, using the HearWHO app.ResultsOverall diagnostic performance was modest, with a sensitivity of 0.45 and specificity of 0.11, yielding a positive predictive value of 0.53, a negative predictive value of 0.08, and an overall accuracy of 0.35.DiscussionThis study raises important questions regarding the design and utility of app-based hearing tests in LMICs. Test uptake is likely influenced by the test language and familiarity with smartphone technology. Apps designed for use in low-resource settings should be co-designed in partnership with the communities they are intended for and developed in context-specific settings.

HearWHO app shows low diagnostic accuracy for hearing loss compared to pure tone audiometryApp based hearing tests show low accuracy in rural clinics

Common questions

Study Details

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HearWHO app shows low diagnostic accuracy for hearing loss compared to pure tone audiometryApp based hearing tests show low accuracy in rural clinics

Common questions

Study Details

Global GJB2 mutation prevalence in nonsyndromic hearing impairment

One in four people with hearing loss carries a specific gene mutation

Clinical research that matters. Delivered to your inbox.

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