# ToneScope — Real-time Sound Visualizer

> Real-time and offline audio signal spectrum analyzer for iOS. (iPhone/iPad app by Newton Niu.)

- Source: https://appshunter.io/ios/app/tonescope/id6757265327 (this page in markdown: same URL + `.md`)
- Developer: [Newton Niu](https://appshunter.io/developer/6777603868)
- Category: Utilities, Music
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-01-15
- Data updated: 2026-08-13
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/tonescope/id6757265327/reviews.md

## What is ToneScope?

ToneScope helps you see and understand sound in real time.

ToneScope transforms complex audio into visual representations that are easy to interpret. Whether you're exploring music, investigating environmental noise, or simply curious about the sounds around you, ToneScope makes sound easier to understand.

It uses a multirate FFT approach to achieve high frequency resolution at low frequencies while remaining efficient for real-time use on iOS. Users can analyze audio in real time or record sound locally and analyze it later.

All processing is performed entirely on-device. Optional audio recordings are saved locally under user control. No data is transmitted, uploaded, or collected.

Designed and developed by Newton Niu.

## Key features

- Real-time audio analysis
- Offline sound signal analysis
- Multirate FFT processing
- High frequency resolution
- On-device processing
- Local audio recording


## Frequently asked questions about ToneScope

### What devices does ToneScope support?

ToneScope is currently designed for iPhone devices. It offers real-time audio analysis and offline processing capabilities specifically optimized for the iOS platform.

### Is ToneScope free to use?

Yes, ToneScope is available for free. There are no in-app purchases or subscription fees required to access its audio analysis features.

### Does ToneScope have ads?

No, ToneScope is ad-free. The application does not contain any advertisements, allowing for an uninterrupted audio analysis experience.

### How often is ToneScope updated?

The latest version of ToneScope is 1.3, last updated on June 29, 2026. Updates are released to improve functionality and performance.

### What is the age rating for ToneScope?

ToneScope has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### Does ToneScope collect user data?

No, all processing is performed entirely on-device. Optional audio recordings are saved locally under user control, and no data is transmitted, uploaded, or collected.

### What is the primary function of ToneScope?

ToneScope's primary function is to provide real-time and offline analysis of sound signals using a multirate FFT approach for high frequency resolution and efficiency.

## Version history (last 5 releases)

### 1.7 — 2026-08-09

• Bug fixes and improvements

### 1.6 — 2026-07-31

• Enhanced visualizations
• New Music preset

### 1.5 — 2026-07-24

• Sharper visualizations

### 1.4 — 2026-07-13

• Peak hold trace
• Enhanced visualizations

### 1.3 — 2026-06-29

• Save a screenshot to Photos
• Enhanced visualizations

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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 2026-08-13.*