# YOUFO vs Ghost SLS

The clearest difference is price: YOUFO at Free against Ghost SLS's $0.99. YOUFO also leads on rating (5.0 vs 4.4) and ads (none vs shown). Ghost SLS's advantage is ratings volume (3.6K vs 5) and chart position (#38 vs unranked). On in-app purchases and device support there is nothing between them.

YOUFO is free to download; Ghost SLS costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

YOUFO 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 5, so its average is the more settled of the two.

YOUFO ships an update every 2 weeks, Ghost SLS every 2 months. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | YOUFO | Ghost SLS |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/youfo/id1211547159/reviews)** | [4.4 (3.6K ratings)](https://appshunter.io/ios/app/ghost-sls/id1504150811/reviews) |
| Number of ratings | 5 | **3.6K** |
| Positive reviews | — | 36.8% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Best chart rank | — | **#38** |
| Size | 315 MB | 50 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 9+ | 17+ |
| Developer | [A Dark Matter Creation LLC](https://appshunter.io/developer/1211547158) | [OurBigAdventure, LLC](https://appshunter.io/developer/562914290) |

## What reviewers say

### YOUFO

[App page](https://appshunter.io/ios/app/youfo/id1211547159)

Connect with users globally to share experiences and sightings through an interactive map. Post anonymously and engage with weekly content to explore the ufology community.

**Highlights:** Global user connection, Interactive sighting map, Anonymous posting option, Weekly blog, podcast, and video content, Ufology community engagement

**Features:** macOS Compatibility

**In-app purchases:** none


### Ghost SLS

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

**Currently charting:** #38 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


## Frequently asked questions

### Is YOUFO free?

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

### Is Ghost SLS free?

Ghost SLS costs $0.99, with no in-app purchases.

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

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

### Do YOUFO or Ghost SLS have ads?

Ghost SLS shows ads; YOUFO does not.

### Which is updated more often, YOUFO or Ghost SLS?

YOUFO ships an update every 2 weeks, and Ghost SLS every 2 months. Most recently, YOUFO was updated on October 12, 2026 and Ghost SLS on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*