# Atrium BT vs Avigilon Unity Access

The clearest difference is rating: Avigilon Unity Access at 3.5 against Atrium BT's 3.0. Atrium BT's advantage is update cadence (every 2 weeks vs every 4 months) and iOS requirement (11.0 vs 13.4). On price, review sentiment, ratings volume and ads there is nothing between them.

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

Avigilon Unity Access holds the better App Store score, 3.5 against 3.0. Both are backed by a comparable volume of ratings — 9 and 10 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

Atrium BT ships an update every 2 weeks, Avigilon Unity Access every 4 months. Both last shipped on June 1, 2026.

## The numbers

| Metric | Atrium BT | Avigilon Unity Access |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (9 ratings)](https://appshunter.io/ios/app/atrium-bt/id1528018565/reviews) | **[3.5 (10 ratings)](https://appshunter.io/ios/app/avigilon-unity-access/id1570339116/reviews)** |
| Number of ratings | 9 | **10** |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free | Free |
| Size | 62 MB | 19 MB |
| Requires iOS | **11.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CDVI Ameriques Ltee](https://appshunter.io/developer/1021321083) | [Avigilon Corporation](https://appshunter.io/developer/429111935) |

## What reviewers say

### Atrium BT

[App page](https://appshunter.io/ios/app/atrium-bt/id1528018565)

Transform your smartphone or tablet into a secure access card. This application works with a specific access control system and Bluetooth readers to provide mobile identification for entry.

**Highlights:** Smartphone as access card, Secure mobile identification, Works with KRYPTO Bluetooth readers, High security access control system integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Avigilon Unity Access

[App page](https://appshunter.io/ios/app/avigilon-unity-access/id1570339116)

This business app allows authorized employees to manage facility access remotely. It enables users to perform global actions like lockdowns, monitor door statuses, and manage user identities and their access permissions on the go.

**Highlights:** Remote access management, Global action execution, Real-time door status monitoring, Identity search and management, Transaction browsing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Atrium BT free?

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

### Is Avigilon Unity Access free?

Avigilon Unity Access is free to download, with no in-app purchases.

### Which has better reviews, Atrium BT or Avigilon Unity Access?

Avigilon Unity Access is rated higher. Atrium BT averages 3.0 out of 5 from 9 ratings, while Avigilon Unity Access averages 3.5 from 10 ratings.

### Do Atrium BT or Avigilon Unity Access have ads?

Neither Atrium BT nor Avigilon Unity Access shows ads.

### Which is updated more often, Atrium BT or Avigilon Unity Access?

Atrium BT ships an update every 2 weeks, and Avigilon Unity Access every 4 months. Most recently, Atrium BT was updated on June 1, 2026 and Avigilon Unity Access on June 1, 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.*