Table 2.
Characteristics of apps validated in peer-reviewed literature.
| App and operating system | App function | Cost (US $)a | Test frequency (kilohertz) | Maximum testing output (decibels) | Calibration | Transducer type and model | Additional features |
| uHear, iOS | Self-administered audiometry app | Freeb | 0.25, 0.5, 1, 2, 4, 6 | 90 | Calibrated with standard Apple headphones using reference equivalent threshold sound pressure levels for TDH39 headphones (ISO389-1) | Air conduction (AC), standard apple headphones; bone conduction (BC), not measured | Noise monitoring, data storage with user identification, and questionnaire to evaluate the impact of hearing loss |
| shoeBOX audiometry, iOS | Self- or tester-administered audiometry app | Humanitarian $2000c, standard version $3100c, professional version $4100c | 0.25, 0.5, 1, 2, 4, 6, 8 | 90-115 | Calibrated with audiometric transducers using American National Standards Institute S3.6-2004 standards | AC, TDH-39 or EAR 3A insert headphones; BC, B-71 bone transducer | Noise monitoring, masking (auto calculated), and data management (cloud) |
| AudCal, iOS | Tester-administered audiometry app | $1.99b | 0.5, 1, 2, 3, 4, 8 | 75 | Calibrated for most models of iPhone/iPad using Apple headphones (standards not specified) | AC, Apple headphones; BC, not measured | Ability to export results as a photograph to photos app, and integrated with Print, Mail, and WhatsApp |
| hearScreen, Android | Tester-administered screening audiometry app (ie, pass/fail result) | $600d | 1, 2, 4 | 40 | Calibrated with nonaudiometric headphones according to ISO389-1-specified standards (within 0.1 decibel accuracy) | AC, Sennheiser HD202 headphones; BC, not measured | Noise monitoring, data capturing and sharing, and location-based referral |
| EarTrumpet, iOS | Self-administered audiometry app | $3.99b | 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8 | 90-100 | Calibrated with Apple’s earbuds (standards not specified) | AC, commercially available earbuds (eg, standard Apple headphones); BC, not measured | Data storage, automated masking noise, and amplification device |
| CellScope, iOS | Otoscopy app with separate attachment | $79e for iPhone case, otoscope attachment, 4 reusable specula | Not applicable (N/A) | N/A | N/A | N/A | Port for pneumatic otoscopy |
aSubject to change.
bPrice excludes cost of device and transducers.
cPrice includes transducers, software, and first year’s calibration. Price excludes the price of the iPad.
dPrice includes device, transducers, and calibration.
ePrice excludes cost of device.