Features & Capabilities

bismark bs-spectrum is a precise and responsive real-time audio spectrum analyzer using FFT (Fast Fourier Transform). It captures sound through your iPhone or iPad’s built-in microphone and visualizes the frequency spectrum with clarity.

Key Features: • Real-time FFT analysis of audio input • Peak frequency and amplitude detection • Snapshot function for waveform comparison • Customizable display options

Display Modes: • Graph Scale: Linear / Logarithmic • FFT Window: Rectangle, Hamming, Hanning, Blackman • Decay Time: From 250 ms to 4 seconds • Amplitude Offset control

Ideal for: • Audio engineers • Musicians and producers • Sound designers • Educational purposes in acoustics or signal processing

bismark bs-spectrum provides a clean and accurate analysis experience, ideal for professionals and learners alike.

User Growth & Download Statistics

App
By:
bismark LLC
Rating:
3.00
(2)
Version:
3.0.3 Last updated: 2026-04-05
Version code:
884052905
Creation date:
2009-08-29
Compatible devices:
Size:
26.35MB
Price:
3.99
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-04
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
Developed by:
bismark LLC
Apple Apps Store
https://apps.apple.com/us/app/bismark-bs-spectrum/id327802142
Website:
http://www.bismark.jp/

User Reviews

installed on Mac M2 Air, and it did nothing! How do I uninstall it and get my money back?
by gn*****, 2023-01-02

Developer has used the "keep it simple stupid," (KISS) development mode. Easy simple intuative interface. Works well on M1 Mac mini. With a wide variety of USB microphones, from the cheap low end, to pro level mics. Vaery basic, but very well worth the money. Would be nice to vary the FFT bin levels. CUDOS to the develolper!
by Hi*****, 2021-04-01

I do medium voltage switchgear maintenance and repair in my job (13.2KV down to 480V). My partner thought that he heard an air leak in the gear one day, which is a sign of arcing. That range is gone in my hearing, so I used this app with my iPhone5 on the main 13.2KV breaker and took a screen shot of it, which showed a hard spike at around 10KHz. We singled up the plant and shut down that feeder the following weekend and pulled out the main breaker for maintenance... We found evidence of arcing inside the arc chutes. We cleaned, lubed, and tested the breaker and put it back into service. Afterwards, I ran the app again as before, and took a another screenshot (over-layed) on the first one.... this showed the spike was absent now. We used this comparison graph to quantify our results to upper management, which validated the expense of a weekend shutdown. Great app!
by Ou*****, 2013-04-20
View all user reviews ›

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