# Ghost Sonar Detector vs SpectraWave Recorder

The clearest difference is price: SpectraWave Recorder at Free against Ghost Sonar Detector's $0.49. SpectraWave Recorder also leads on update cadence (every 4 days vs every 3 weeks). Ghost Sonar Detector's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

SpectraWave Recorder is free to download; Ghost Sonar Detector costs $0.49 up front. SpectraWave Recorder sells 1 one-off in-app purchase. Ghost Sonar Detector asks for nothing beyond the download.

Ghost Sonar Detector ships an update every 3 weeks, SpectraWave Recorder every 4 days. The most recent releases landed on October 25, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Ghost Sonar Detector | SpectraWave Recorder |
| --- | --- | --- |
| Price | $0.49 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 6 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 9+ | 9+ |
| Developer | [satoshi amasaki](https://appshunter.io/developer/1891268722) | [Vikram Joshi](https://appshunter.io/developer/1875452225) |

## What reviewers say

### Ghost Sonar Detector

[App page](https://appshunter.io/ios/app/ghost-sonar-detector/id6771117031)

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

**In-app purchases:** none


### SpectraWave Recorder

[App page](https://appshunter.io/ios/app/spectrawave-recorder/id6782994720)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpectraWave Pro | $5.99 | one-time |


## Frequently asked questions

### Is Ghost Sonar Detector free?

Ghost Sonar Detector costs $0.49, with no in-app purchases.

### Is SpectraWave Recorder free?

SpectraWave Recorder is free to download, with in-app purchases available.

### Do Ghost Sonar Detector or SpectraWave Recorder have ads?

Neither Ghost Sonar Detector nor SpectraWave Recorder shows ads.

### Which is updated more often, Ghost Sonar Detector or SpectraWave Recorder?

Ghost Sonar Detector ships an update every 3 weeks, and SpectraWave Recorder every 4 days. Most recently, Ghost Sonar Detector was updated on October 25, 2026 and SpectraWave Recorder on October 19, 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.*