← All Apple listings

Ultrasonic Analyzer

by DEXUS Pawel Krzywdzinski more by this developer →

#170,922 of 719,896 by ratings on Apple · #4,910 of 20,928 in Music

View in the Apple store ↗

Compare with another extension

Category: Music

Description

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.

Alternatives to Ultrasonic Analyzer

Name	Ratings	Rating
Audio Spectrum Analyzer dB RTA by Marina Polyanskaya	3,039	4.5	compare
Audio / Spectrum Analyzer by Loop-Sessions.LLC.	1,040	4.6	compare
Audio Spectrum Analyzer Pro by Vlad Polyanskiy	238	4.4	compare
Spectrum Analyzer: Spectrogram by Music Breath, OOO	196	4.2	compare
BPM & Chords Analyzer Lite - DJ and Musicians Tool by andrea angelini	107	3.9	compare
AUDIIO - RTA Analyzer by BetaMatters Limited	95	4.3	compare
iAnalyzer by 平 陈	75	4.2	compare
Spectrum Analyzer RTA by ONYX 3	68	4.2	compare
Audio Analyzer by DEXUS Pawel Krzywdzinski	40	4.4	compare
Pitch Analyzer by Supertintin Co., Ltd	24	2.7	compare

Growth

Change in ratings, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.

History

Tracking since 09/05/2026. History accumulates as changes are observed — check back soon.