OtoUSB Application icon

OtoUSB 2.86

7.7 MB / 0+ Downloads / Rating 5.0 - 1 reviews


See previous versions

OtoUSB, developed and published by Cursor Engineering, has released its latest version, 2.86, on 2025-02-07. This app falls under the Tools category on the Google Play Store and has achieved over 10 installs. It currently holds an overall rating of 5.0, based on 1 reviews.

OtoUSB APK available on this page is compatible with all Android devices that meet the required specifications (Android 6.0+). It can also be installed on PC and Mac using an Android emulator such as Bluestacks, LDPlayer, and others.

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App Screenshot

App Screenshot

App Details

Package name: com.paad.otousbtest

Updated: 12 days ago

Developer Name: Cursor Engineering

Category: Tools

New features: Show more

App Permissions: Show more

Installation Instructions

This article outlines two straightforward methods for installing OtoUSB on PC Windows and Mac.

Using BlueStacks

  1. Download the APK/XAPK file from this page.
  2. Install BlueStacks by visiting http://bluestacks.com.
  3. Open the APK/XAPK file by double-clicking it. This action will launch BlueStacks and begin the application's installation. If the APK file does not automatically open with BlueStacks, right-click on it and select 'Open with...', then navigate to BlueStacks. Alternatively, you can drag-and-drop the APK file onto the BlueStacks home screen.
  4. Wait a few seconds for the installation to complete. Once done, the installed app will appear on the BlueStacks home screen. Click its icon to start using the application.

Using LDPlayer

  1. Download and install LDPlayer from https://www.ldplayer.net.
  2. Drag the APK/XAPK file directly into LDPlayer.

If you have any questions, please don't hesitate to contact us.

Previous Versions

OtoUSB 2.86
2025-02-07 / 7.7 MB / Android 6.0+

OtoUSB 2.80
2024-04-18 / 3.9 MB / Android 6.0+

About this app

To be sure that custom earpieces for hearing protection show optimal behaviour one can perform a fast leak test.
A proper test provides certainty about a perfect fit of the earpiece. When there is a perfect fit, noise can only enter the ear canal through the noise filter and not outside to the earpiece.
For that purpose the room in the ear canal, between eardrum and otoplastic, is brought to a small overpressure of 5mB (0,073psi), by means of air. When the pressure is reached, the air system is closed and when the pressure stays stable for five seconds the otoplastic has the perfect fit. The related software controls the earpiece tester and allows the user to analyze the pressure course, real time, by means of a graph.

Test pressure : 5mB (≡ 51mmH2O or 500Pa)
Trip pressure : < 4mB
Test time : 5 seconds
Test duration : max. 10 seconds
USB : version 2.0 + 3.0

New features

v2.80: Universal file structure. Compatible with Android 14 (API 34). Some minor bugs fixed.

App Permissions

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows applications to access information about networks.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.