# ATN Obsidian 4 vs Kassa Security

The clearest difference is review sentiment: Kassa Security at 67% against ATN Obsidian 4's 16%. Kassa Security also leads on rating (3.4 vs 2.0) and update cadence (every 2 months vs every 3 months). ATN Obsidian 4's advantage is ratings volume (234 vs 28). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Kassa Security holds the better App Store score, 3.4 against 2.0. That said, the two scores are not equally well evidenced: ATN Obsidian 4 has 234 ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 16% of ATN Obsidian 4's written reviews are positive against 67% of Kassa Security's.

ATN Obsidian 4 ships an update every 3 months, Kassa Security every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | ATN Obsidian 4 | Kassa Security |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (234 ratings)](https://appshunter.io/ios/app/atn-obsidian-4/id1337731256/reviews) | **[3.4 (28 ratings)](https://appshunter.io/ios/app/kassa-security/id1608186159/reviews)** |
| Number of ratings | **234** | 28 |
| Positive reviews | 16.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 85 MB | 151 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ATN](https://appshunter.io/developer/789970891) | [莱卡斯科技有限公司](https://appshunter.io/developer/1608186161) |

## What reviewers say

### ATN Obsidian 4

[App page](https://appshunter.io/ios/app/atn-obsidian-4/id1337731256)

Connect your smartphone or tablet to compatible ATN smart scopes via WiFi. Stream live video of your hunt, adjust device settings, and review recorded images and videos. Unlock the full capabilities of your ATN optics.

**Highlights:** Live video streaming, Device settings adjustment, Review stored media, WiFi connectivity, Enhances ATN optic experience

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Fast live streaming
- 👍 Easy scope configuration
- 🔍 Useful viewfinder feature

**What reviewers complain about**

- 🐛 Frequent connection issues
- 🐛 App crashes and freezes
- 🐛 Unreliable video/photo gallery
- 🐛 Scope locking up when using app

**Reported bugs**

- App unable to discover scope
- Live view not working as expected
- Scope firmware updates causing issues

**Requested features**

- Add photo/video gallery to view media
- Improve app stability and reliability
- Allow profile editing directly on scope


### Kassa Security

[App page](https://appshunter.io/ios/app/kassa-security/id1608186159)

Monitor your security cameras remotely with live viewing and playback of recorded footage. Receive instant motion detection alerts to stay informed about any activity.

**Highlights:** Real-time camera viewing, Recorded video playback, Motion detection notifications, Cloud and local storage access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ATN Obsidian 4 free?

ATN Obsidian 4 is free to download, with no in-app purchases.

### Is Kassa Security free?

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

### Which has better reviews, ATN Obsidian 4 or Kassa Security?

Kassa Security is rated higher. ATN Obsidian 4 averages 2.0 out of 5 from 234 ratings, while Kassa Security averages 3.4 from 28 ratings.

### Do ATN Obsidian 4 or Kassa Security have ads?

Neither ATN Obsidian 4 nor Kassa Security shows ads.

### Which is updated more often, ATN Obsidian 4 or Kassa Security?

ATN Obsidian 4 ships an update every 3 months, and Kassa Security every 2 months. Most recently, ATN Obsidian 4 was updated on October 24, 2026 and Kassa Security on October 24, 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.*