# Sound Analyzer: Spectrum & Hz — Real-time FFT Frequency Meter

> Real-time FFT Frequency Meter (iPhone/iPad app by Takahiro Endo.)

- Source: https://appshunter.io/ios/app/sound-analyzer-spectrum-and-hz/id6759789217 (this page in markdown: same URL + `.md`)
- Developer: [Takahiro Endo](https://appshunter.io/developer/1878005918)
- Category: Utilities, Music
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, Japanese
- Released: 2026-03-02
- Data updated: 2026-10-31

## What is Sound Analyzer?

Sound Analyzer analyzes audio from your microphone in real time using FFT, and
  displays the frequency spectrum visually. Perfect for noise surveys, acoustic
  checks, and environmental measurements.

  【Features】

  ■ Real-Time Spectrum Display
  Live FFT analysis from the microphone. Simultaneously shows peak frequency,
  peak amplitude, and RMS level.

  ■ Audio Recording & Playback (Pro)
  Record audio while measuring. During playback, the original FFT spectrum is
  recalculated in real time. Linear scale display is also supported.

  ■ GPS Location Tagging (Pro)
  Automatically attach location data to recordings and measurements. View where
  each measurement was taken on a map.

  ■ Memo & Tag Management (Pro)
  Add memos and tags to each recording for easy organization. Categorize by
  factory, traffic noise, outdoor, and more.

  ■ CSV Export (Pro)
  Export measurement data as CSV files for use in Excel or Numbers — ideal for
  reports and analysis.

  ■ Playback Speed Control (Pro)
  Play recordings at 0.5x, 1x, 2x, or 4x speed to closely examine audio details.

  【Use Cases】
  · Construction and facility noise level monitoring
  · Frequency response checks for instruments and speakers
  · Acoustic recording at outdoor events and natural environments
  · Audio and music education and research

  Professional frequency analysis, made simple — anytime, anywhere.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Plan | $1.99 | one-time |


## Is Sound Analyzer safe?

Not enough ratings yet to assess Sound Analyzer.

## Is Sound Analyzer legit?

Sound Analyzer: Spectrum & Hz appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sound Analyzer is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.0.5 — 2026-10-28

· Location access is now requested only when you start a Pro recording.
· The spectrum and waveform now size themselves to your iPhone's screen and Split View.

### 1.0.4 — 2026-06-07

- Minor corrections have been made.

### 1.0.3 — 2026-06-04

- The URL of the official website has been changed.

### 1.0.2 — 2026-04-09

- Change of support URL
- Linear scale display is also supported.(Pro)

### 1.0.1 — 2026-03-03

- Minor fixes

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| --- | --- | --- | --- |
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| [DigiCoraize](https://appshunter.io/ios/app/digicoraize/id6761649987) | — | Free | Utilities |
| [Pipe Rack Designer: BOM](https://appshunter.io/ios/app/pipe-rack-designer-bom/id6792504712) | — | $3.99 | Utilities |
| [Curvely](https://appshunter.io/ios/app/curvely/id6794988370) | — | $0.99 | Utilities |
| [AURA Connect · Voice Presence](https://appshunter.io/ios/app/aura-connect-voice-presence/id6758195499) | — | Free | Utilities |
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## More apps by Takahiro Endo

- [かんたん血圧管理 - 血圧手帳・記録グラフ](https://appshunter.io/ios/app/id6759306935)
- [Wandershot: Timestamp Camera](https://appshunter.io/ios/app/wandershot-timestamp-camera/id6759365808)
- [MeshRelay](https://appshunter.io/ios/app/meshrelay/id6760348060)
- [VOXCELMOVIE](https://appshunter.io/ios/app/voxcelmovie/id6760961334)
- [SEIMON](https://appshunter.io/ios/app/seimon/id6762163853)

All apps by Takahiro Endo: https://appshunter.io/developer/1878005918

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-31.*