# Atrium BT vs Tract Pro

The clearest difference is iOS requirement: Atrium BT at 11.0 against Tract Pro's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Atrium BT ships an update every 2 weeks, Tract Pro every 10 days. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Atrium BT | Tract Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (9 ratings)](https://appshunter.io/ios/app/atrium-bt/id1528018565/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 62 MB | 16 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CDVI Ameriques Ltee](https://appshunter.io/developer/1021321083) | [Tract Systems Inc.](https://appshunter.io/developer/1038900848) |

## 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


### Tract Pro

[App page](https://appshunter.io/ios/app/tract-pro/id6470132693)

**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 Tract Pro free?

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

### Do Atrium BT or Tract Pro have ads?

Neither Atrium BT nor Tract Pro shows ads.

### Which is updated more often, Atrium BT or Tract Pro?

Atrium BT ships an update every 2 weeks, and Tract Pro every 10 days. Most recently, Atrium BT was updated on October 11, 2026 and Tract Pro on October 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.*