# SignalGeneratorApp vs Audio / Spectrum Analyzer

The clearest difference is in-app purchases: SignalGeneratorApp at none against Audio / Spectrum Analyzer's 1. SignalGeneratorApp also leads on ads (none vs shown) and iOS requirement (11.2 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Audio / Spectrum Analyzer sells 1 one-off in-app purchase. SignalGeneratorApp asks for nothing beyond the download.

## The numbers

| Metric | SignalGeneratorApp | Audio / Spectrum Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews)** |
| Number of ratings | — | **1.1K** |
| Positive reviews | — | 78.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 5 MB |
| Requires iOS | **11.2** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kazuma Shiromoto](https://appshunter.io/developer/1329106278) | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) |

## What reviewers say

### SignalGeneratorApp

[App page](https://appshunter.io/ios/app/signalgeneratorapp/id1329106279)

**Features:** macOS Compatibility

**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) | $11.99 | 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 SignalGeneratorApp free?

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

### Is Audio / Spectrum Analyzer free?

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

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

Audio / Spectrum Analyzer shows ads; SignalGeneratorApp does not.

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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.*