# Building Acoustics Partner vs Mtf License

The clearest difference is update cadence: Mtf License at every 3 weeks against Building Acoustics Partner's every 4 months. Mtf License also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Building Acoustics Partner ships an update every 4 months, Mtf License every 3 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Building Acoustics Partner | Mtf License |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Size | 210 MB | 45 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hottinger Bruel & Kjaer A/S](https://appshunter.io/developer/622515894) | [Okkar Thet Naing](https://appshunter.io/developer/1664317631) |

## What reviewers say

### Building Acoustics Partner

[App page](https://appshunter.io/ios/app/building-acoustics-partner/id1487977751)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Mtf License

[App page](https://appshunter.io/ios/app/mtf-license/id6472442875)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Building Acoustics Partner free?

Building Acoustics Partner is free to download, with no in-app purchases.

### Is Mtf License free?

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

### Do Building Acoustics Partner or Mtf License have ads?

Neither Building Acoustics Partner nor Mtf License shows ads.

### Which is updated more often, Building Acoustics Partner or Mtf License?

Building Acoustics Partner ships an update every 4 months, and Mtf License every 3 weeks. Most recently, Building Acoustics Partner was updated on October 29, 2026 and Mtf License on October 30, 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.*