Ultrasonic Analyzer

Name: Ultrasonic Analyzer
Price: 3000 JPY
Rating: 4.6 (5 reviews)
Author: DEXUS Pawel Krzywdzinski

By: DEXUS Pawel Krzywdzinski App

Music

Overview

Version:

2.8

Last updated: 2025-02-02

Features & Capabilities

Unlock the hidden sounds around you in real time

Ultrasonic Analyzer is a real-time spectrum, spectrogram, oscilloscope, and octave RTA analyzer for your iPhone or iPad. It provides a visual representation of ultrasounds using a sampling rate of up to 384kHz**. You can listen to transposed ultrasounds* and analyze them in real time. For sounds that are normally inaudible, a slowed-down playback option is also available.

Ultrasonic Analyzer can be used to analyze the calls of various animals (e.g., bats, dolphins), measure the frequency response of high-end audio equipment, or evaluate ultrasonic sensors. Additionally, it allows you to analyze short imported audio files within a spectrogram context.

Features

Sampling rates: 44.1kHz, 48kHz, 96kHz, 192kHz, 200kHz, 250kHz, 384kHz**
Real-time transposed ultrasound listening during recording*
Spectrogram analyzer: Color and black & white modes
Spectrum analyzer
Oscilloscope (full FFT window size)
Octave RTA analyzer: Bands – full, 1/3, 1/6, 1/12 (RMS values)
Max/min Octave RTA values
dBFS Meter
Fast real-time response
Adjustable spectrogram frequency resolution
Configurable time interval between FFT computations, with values as low as 1ms or even lower
Fast Fourier Transform (FFT)
FFT window sizes: 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536
Recording trigger: Automatically triggers based on specified frequency bands
Zoom and pan capabilities for all charts
Measurement tools available in all charts
Playback analysis
Transposition during playback
Slow-down playback: Transpose octaves down for easier analysis
Picture-in-Picture (PIP) mode: Allows simultaneous spectrogram analysis with a secondary chart (Octave RTA, Spectrum, or Oscilloscope)
Audio input support: Built-in microphone, external microphone (via USB camera adapter or iPhone/iPad dock connector – Core Audio compliant devices)
Sharing options: Share charts and audio recordings via email, social networks, or clipboard
Exporting capabilities: Save audio recordings (WAV) and image charts (PNG) to iOS Document Browser
Audio file import: Load short audio files from other apps or the iOS Document Browser
Supported audio formats: WAV, CAF, AAC, MP3
Automatic sample rate conversion for imported files
Frequency scale options: Linear and logarithmic
Amplitude scale options: Linear and logarithmic (dBFS)
dBFS Meter weighting: dBZ (linear)
Adjustable spectrogram length (dependent on resolution settings)

Tested with (via USB adapter):

Dodotronic Ultramic200K, Ultramic250K, Ultramic384K
Pettersson M500-384
Avisoft UltraSoundGate 116Un

Make sure you are using the latest iOS update.

*Requires an external microphone with ultrasonic capabilities connected via a USB adapter.
**Real-time analysis at a 96kHz sample rate or higher is only possible with an external USB microphone. Alternatively, you can import files recorded on an external device for non-real-time analysis.

User Growth & Download Statistics

App

By:

DEXUS Pawel Krzywdzinski

Rating:

4.60

(5) 0.70

Version:

2.8 Last updated: 2025-02-02

Version code:

872153284

Creation date:

2014-04-25

Compatible devices:

Size:

2.23MB

Price:

3000

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-18

Compare stats and ranking:

Ranking

# 537,982 ▼ 293,739

Other rankings

#70 in analyzer keyword 20 ▲ 5

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

DEXUS Pawel Krzywdzinski

Apple Apps Store

https://apps.apple.com/jp/app/ultrasonic-analyzer/id851069926?l=en-US

User Reviews

Users praise the app's UI, stability, and versatile data analysis, especially with external ultrasonic microphones, for various use cases like wildlife, machinery, and airflow leaks. However, recurring drawbacks include hardware limitations on iPhone for high-frequency analysis, lack of Bluetooth headphone support, occasional crashes and data loss, missing export/save capabilities and presets, and concerns about price and update cadence.

Pros

Excellent UI/UX and overall stability.
Strong compatibility with external ultrasonic microphones/interfaces (e.g., Dodotronic Ultramic 384BLE), enabling higher-frequency use.
Versatile, multi-domain analysis with recording and easy post-processing.
Accessible design for visually impaired users.

Cons

Hardware limits high-frequency analysis on iPhone; external mic required for higher rates.
No Bluetooth headphone support; can't use AirPods or other wireless headphones.
Stability issues: crashes and data loss risk; bugs when closing settings.
Export/save and playback features are missing or malfunctioning; no presets.
Expensive for a premium app and appears not to be updated regularly.

Recent reviews

This app is pretty amateurish, not even supporting Bluetooth headphones on iPhone. It's 2025. When was the last time you saw an app that could only output over wired headphones? I didn't realize that was even a possibility. It's like the developer stopped trying back around 2018, and never updated it further. The app's readouts also mix dB (SPL) and dBFS freely, even though there is no way to get SPL without first calibrating the system. What's up with that? The whole thing just feels very "beta version written by a student in their dorm room." This is the single most expensive single-purchase app I have ever encountered. I probably wouldn't bother to keep it even if it were free.

by AO*****, 2025-01-02

Anybody who’s the victim of any kind of surveillance abuse or voyeuristic abuse in general, can use this app to pick up on a nearly imperceptible frequency around 14,000 kHz. The untrained ear you wouldn’t be able to hear this frequency but it is the result of using wave generated surveillance systems such as the CTX 4000 or the national security agencies tempest program that uses subtle amounts of non-ionizing radiation directed at the building that the target is in to pick up on all the electronic and more importantly biometric information similar to what you get from the xavor1000 system. Simply run the recording through a program like audacity or adobe audition and increase the decibel rate what’s you hone in on it with the apps spectrum analyzer.