# Spectre vs Audio / Spectrum Analyzer

The clearest difference is price: Audio / Spectrum Analyzer at Free against Spectre's $0.99. Audio / Spectrum Analyzer also leads on rating (4.6 vs 3.0) and review sentiment (79% vs 40%). Spectre's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Audio / Spectrum Analyzer is free to download; Spectre costs $0.99 up front. Audio / Spectrum Analyzer sells 1 one-off in-app purchase. Spectre asks for nothing beyond the download.

Audio / Spectrum Analyzer holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Audio / Spectrum Analyzer has 1K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 40% of Spectre's written reviews are positive against 79% of Audio / Spectrum Analyzer's.

Spectre ships an update every 96 months, Audio / Spectrum Analyzer every 2 weeks. The most recent releases landed on September 6, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Spectre | Audio / Spectrum Analyzer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/spectre/id913027939/reviews) | **[4.6 (1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews)** |
| Number of ratings | 2 | **1K** |
| Positive reviews | 40.0% of reviews | **78.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 96 months | **Every 2 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 46 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael Hand](https://appshunter.io/developer/854186096) | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) |

## What reviewers say

### Spectre

[App page](https://appshunter.io/ios/app/spectre/id913027939)

This audio analysis utility provides real-time FFT and oscilloscope views for sound input. Customize waveform display, control sample rates, and zoom in for detailed analysis on iOS devices.

**Highlights:** FFT Analysis, Oscilloscope, Customizable Waveform, Linear & Logarithmic Forms, Pause/Play Controls, Zoom Functionality

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

**In-app purchases:** none


### Audio / Spectrum Analyzer

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574)

This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.

**Highlights:** Simultaneous waveform and spectrum display, Configurable display layouts, Selectable FFT size and averaging, Frequency weighting options (Flat, dBA, dBC), Octave band analysis, Audio signal and noise generation, Peak hold and pitch meter

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Remove ads, High-Res analysis) | $11.49 | one-time |

**What reviewers like**

- 👍 Customizable features
- ⚙️ Accurate measurements
- 🚀 Helpful for troubleshooting
- 💡 Useful for ghost hunting

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔋 High battery and CPU usage
- 🚫 Inappropriate ads/content
- 🔒 Security concerns with payment info

**Reported bugs**

- Stuck on latest measurement
- White noise instead of expected functionality
- Disconnects AirPods

**Requested features**

- Sampling rate adjustment
- Wave shape tracking
- Audio file analysis
- Octave analysis


## Frequently asked questions

### Is Spectre free?

Spectre costs $0.99, with no in-app purchases.

### Is Audio / Spectrum Analyzer free?

Audio / Spectrum Analyzer is free to download, with in-app purchases available.

### Which has better reviews, Spectre or Audio / Spectrum Analyzer?

Audio / Spectrum Analyzer is rated higher. Spectre averages 3.0 out of 5 from 2 ratings, while Audio / Spectrum Analyzer averages 4.6 from 1K ratings.

### Do Spectre or Audio / Spectrum Analyzer have ads?

Audio / Spectrum Analyzer shows ads; Spectre does not.

### Which is updated more often, Spectre or Audio / Spectrum Analyzer?

Spectre ships an update every 96 months, and Audio / Spectrum Analyzer every 2 weeks. Most recently, Spectre was updated on September 6, 2026 and Audio / Spectrum Analyzer on September 25, 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.*