# Spectra vs Ghost Sonar Detector

The clearest difference is price: Spectra at Free against Ghost Sonar Detector's $0.49. Spectra also leads on update cadence (every 10 days vs every 3 weeks). Ghost Sonar Detector's advantage is in-app purchases (none vs 2) and iOS requirement (17.0 vs 26.0). On ads and device support there is nothing between them.

Spectra is free to download; Ghost Sonar Detector costs $0.49 up front. Spectra sells 2 in-app purchases, starting at $3.99 per 7 days. Ghost Sonar Detector asks for nothing beyond the download.

Spectra ships an update every 10 days, Ghost Sonar Detector every 3 weeks. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Spectra | Ghost Sonar Detector |
| --- | --- | --- |
| Price | **Free** | $0.49 |
| Rating | **[4.3 (9 ratings)](https://appshunter.io/ios/app/spectra-ghost-detector-and-emf/id6757859867/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 46 MB | 6 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Yahor Bazyk](https://appshunter.io/developer/6788705254) | [satoshi amasaki](https://appshunter.io/developer/1891268722) |

## What reviewers say

### Spectra

[App page](https://appshunter.io/ios/app/spectra-ghost-detector-and-emf/id6757859867)

Transform your device into a paranormal investigation tool. Detect and attempt communication with spirits using a ghost radar, EMF field detector, and spirit box communicator. Explore the unknown and uncover potential supernatural activity.

**Highlights:** Ghost Radar Visualizer, EMF Field Detector, Spirit Box Communicator, Real-time spirit tracking, Electromagnetic field detection, Two-way spirit communication

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Year | $24.99 | per year |


### Ghost Sonar Detector

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Spectra free?

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

### Is Ghost Sonar Detector free?

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

### Do Spectra or Ghost Sonar Detector have ads?

Neither Spectra nor Ghost Sonar Detector shows ads.

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

Spectra ships an update every 10 days, and Ghost Sonar Detector every 3 weeks. Most recently, Spectra was updated on October 31, 2026 and Ghost Sonar Detector on October 29, 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.*