# Building X Access vs LOS Main

The clearest difference is update cadence: Building X Access at every 4 weeks against LOS Main's every 3 months. LOS Main's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

Building X Access ships an update every 4 weeks, LOS Main every 3 months. The most recent releases landed on July 9, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Building X Access | LOS Main |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 3 months |
| Size | 22 MB | 26 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Siemens AG](https://appshunter.io/developer/394503271) | [Heureka Business Solutions GmbH](https://appshunter.io/developer/1494695041) |

## What reviewers say

### Building X Access

[App page](https://appshunter.io/ios/app/building-x-access/id1483078094)

**Features:** Apple Wallet

**In-app purchases:** none


### LOS Main

[App page](https://appshunter.io/ios/app/los-main/id1625906575)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Building X Access free?

Building X Access is free to download, with no in-app purchases.

### Is LOS Main free?

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

### Do Building X Access or LOS Main have ads?

Neither Building X Access nor LOS Main shows ads.

### Which is updated more often, Building X Access or LOS Main?

Building X Access ships an update every 4 weeks, and LOS Main every 3 months. Most recently, Building X Access was updated on July 9, 2026 and LOS Main on September 9, 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.*