# Simple Spectrogram — Live audio spectrum & notes

> Real-time audio spectrogram visualizing frequencies and musical notes. (iPhone/iPad app by DANIEL LAWRENCE LU.)

- Source: https://appshunter.io/ios/app/simple-spectrogram/id6823407210 (this page in markdown: same URL + `.md`)
- Developer: [DANIEL LAWRENCE LU](https://appshunter.io/developer/6823407212)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-10-21
- Data updated: 2026-10-26
- Monetization: free

## What is Simple Spectrogram?

See the frequencies in the sound around you. Spectrogram turns your microphone input into a smooth, real-time spectrogram with a clear logarithmic frequency scale and Inferno colors.

• Watch sound evolve over time, with the newest audio at the top.
• Pause and tap any slice to inspect its frequency spectrum.
• Tap or drag on the spectrum to find nearby peaks and their exact frequencies.
• See the nearest musical note and the difference in hertz and cents, referenced to A4 = 440 Hz.
• Adjust the frequency range, noise floor, and contrast.
• Use portrait or landscape on iPhone and iPad.

Audio is analyzed on your device in memory. It is never recorded, uploaded, or shared. No account, ads, or tracking.

Musical note labels describe individual spectral peaks, which may be harmonics rather than a sound’s fundamental frequency.

## Key features

- Real-time spectrogram visualization
- Logarithmic frequency scale
- Identify musical notes and frequencies
- Pause and inspect audio slices
- Adjustable frequency range and contrast
- Portrait and landscape support

## Is Simple Spectrogram safe?

Not enough ratings yet to assess Simple Spectrogram.

## Is Simple Spectrogram legit?

Simple Spectrogram has limited verification signals. The AppsHunter Legitimacy Score for Simple Spectrogram is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about Simple Spectrogram

### What is Simple Spectrogram?

Simple Spectrogram is a utility app that displays the frequencies in your device's microphone input as a real-time spectrogram. It helps you visualize sound and identify nearby musical notes.

### Does Simple Spectrogram have ads?

No, Simple Spectrogram is ad-free. The app description explicitly states 'No account, ads, or tracking'.

### Is Simple Spectrogram free to use?

Yes, Simple Spectrogram is available for free. It has a 'Free' price listed and no in-app purchases are mentioned.

### What devices does Simple Spectrogram support?

Simple Spectrogram supports both iPhone and iPad devices. It can be used in both portrait and landscape orientations on these devices.

### How does Simple Spectrogram handle audio privacy?

Audio is analyzed on your device in memory and is never recorded, uploaded, or shared. The app prioritizes user privacy with no account, ads, or tracking.

### Can I adjust the spectrogram settings in Simple Spectrogram?

Yes, you can adjust the frequency range, noise floor, and contrast within Simple Spectrogram. This allows for a more customized analysis of the audio spectrum.

### What is the age rating for Simple Spectrogram?

Simple Spectrogram has an age rating of 4+. This indicates it is suitable for a wide range of users, including children.

### How often is Simple Spectrogram updated?

Simple Spectrogram was last updated on 2026-10-21, with version 1.0 released on the same date. Further update frequency is not specified.

## Version history (last 1 release)

### 1.0 — 2026-10-21

No release notes.

## Related topics

[wavelet voice sonogram](https://appshunter.io/ios/topics/wavelet-voice-sonogram)

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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 2026-10-26.*