# Ghost SLS vs SpiritTrace

The clearest difference is rating: SpiritTrace at 5.0 against Ghost SLS's 4.4. SpiritTrace also leads on ads (none vs shown). Ghost SLS's advantage is in-app purchases (none vs 2) and ratings volume (3.6K vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. SpiritTrace sells 2 in-app purchases, starting at $3.99 per month. Ghost SLS asks for nothing beyond the download.

SpiritTrace holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Ghost SLS has 3.6K ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Ghost SLS | SpiritTrace |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (3.6K ratings)](https://appshunter.io/ios/app/ghost-sls/id1504150811/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spirittrace-ghost-emf-meter/id6799577491/reviews)** |
| Number of ratings | **3.6K** | 1 |
| Positive reviews | 36.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | — |
| Monetization | **Ad-supported** | Subscription |
| Best chart rank | **#88** | — |
| Size | 50 MB | 16 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [OurBigAdventure, LLC](https://appshunter.io/developer/562914290) | [617SW, LLC](https://appshunter.io/developer/6791188705) |

## What reviewers say

### Ghost SLS

[App page](https://appshunter.io/ios/app/ghost-sls/id1504150811)

**Currently charting:** #88 Top Paid · Entertainment (US App Store)

This app emulates an SLS camera to detect human figures using your device's camera. It includes filters to help distinguish real detections from false positives caused by lighting. Users can capture and share photos of their findings and connect with others in a community chat.

**Highlights:** SLS camera emulation, Human figure detection, Camera filters for false positives, Photo capture and sharing, Community group chat

**In-app purchases:** none

**What reviewers like**

- 👍 Works well for ghost hunting
- 🔍 Accurately detects anomalies
- 🤖 Realistic ghost detection

**What reviewers complain about**

- 🐛 Picks up non-ghost objects as anomalies
- 💰 Ads even after paid purchase
- 🤔 Ghosts appear to be dancing/moving unnaturally

**Reported bugs**

- Camera always faces forward, can't reverse
- Laggy and slow performance
- Anomalies disappear when tilting the camera

**Requested features**

- Ability to save/retrieve photos
- Improved accuracy in ghost detection
- Option to disable ads in paid version


### SpiritTrace

[App page](https://appshunter.io/ios/app/spirittrace-ghost-emf-meter/id6799577491)

This app uses your iPhone's magnetometer to detect and display magnetic field changes in real-time. Explore different visual outputs, capture evidence clips, and enhance your paranormal investigations with optional audio and haptic feedback.

**Highlights:** Real-time magnetic field detection, Four sensor-driven display modes, 15-second evidence clip export, Geiger-style audio feedback, Haptic feedback intensification, Built for paranormal experiments

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpiritTrace EMF Pro Monthly | $3.99 | per month |
| SpiritTrace EMF Pro Yearly | $19.99 | per year |


## Frequently asked questions

### Is Ghost SLS free?

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

### Is SpiritTrace free?

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

### Which has better reviews, Ghost SLS or SpiritTrace?

SpiritTrace is rated higher. Ghost SLS averages 4.4 out of 5 from 3.6K ratings, while SpiritTrace averages 5.0 from 1 ratings.

### Do Ghost SLS or SpiritTrace have ads?

Ghost SLS shows ads; SpiritTrace 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.*