# ToneScope vs Spectrum Analyzer+ Audio FFT

The clearest difference is rating: ToneScope at 4.6 against Spectrum Analyzer+ Audio FFT's 2.6. ToneScope also leads on ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ToneScope holds the better App Store score, 4.6 against 2.6. Both are backed by a comparable volume of ratings — 5 and 5 respectively.

ToneScope ships an update every 10 days, Spectrum Analyzer+ Audio FFT every 5 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ToneScope | Spectrum Analyzer+ Audio FFT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/tonescope/id6757265327/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858/reviews) |
| Number of ratings | 5 | 5 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | **Free** | Ad-supported |
| Size | 2 MB | 95 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Newton Niu](https://appshunter.io/developer/6777603868) | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) |

## What reviewers say

### ToneScope

[App page](https://appshunter.io/ios/app/tonescope/id6757265327)

This audio analysis tool offers real-time and offline sound signal processing. It utilizes a multirate FFT for high frequency resolution and efficiency on iOS devices. All data processing is done locally, ensuring user privacy.

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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Spectrum Analyzer+ Audio FFT

[App page](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858)

Analyze live audio frequencies from your device's microphone. Identify peak frequencies, hums, and room modes with detailed spectrum views and capture analysis. Compare sound changes over time and export data for further study.

**Highlights:** Live frequency spectrum display, 5-second capture and analysis, Peak frequency and level identification, Adjustable dB range, Comparison of sound changes, Specialized analysis modes (Voice, Machine, Room), CSV export

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ToneScope free?

ToneScope is free to download, with no in-app purchases.

### Is Spectrum Analyzer+ Audio FFT free?

Spectrum Analyzer+ Audio FFT is free to download, with no in-app purchases.

### Which has better reviews, ToneScope or Spectrum Analyzer+ Audio FFT?

ToneScope is rated higher. ToneScope averages 4.6 out of 5 from 5 ratings, while Spectrum Analyzer+ Audio FFT averages 2.6 from 5 ratings.

### Do ToneScope or Spectrum Analyzer+ Audio FFT have ads?

Spectrum Analyzer+ Audio FFT shows ads; ToneScope does not.

### Which is updated more often, ToneScope or Spectrum Analyzer+ Audio FFT?

ToneScope ships an update every 10 days, and Spectrum Analyzer+ Audio FFT every 5 days. Most recently, ToneScope was updated on October 31, 2026 and Spectrum Analyzer+ Audio FFT on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*