# Belimo Assistant 2 vs AirBuilding

The clearest difference is in-app purchases: Belimo Assistant 2 at none against AirBuilding's 1. AirBuilding's advantage is update cadence (fortnightly vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AirBuilding sells 1 in-app purchase, starting at $24.99 per month. Belimo Assistant 2 asks for nothing beyond the download.

Belimo Assistant 2 ships an update every 5 weeks, AirBuilding fortnightly. The most recent releases landed on October 6, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Belimo Assistant 2 | AirBuilding |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (10 ratings)](https://appshunter.io/ios/app/belimo-assistant-2/id6475810004/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 122 MB | 17 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BELIMO Automation AG](https://appshunter.io/developer/1149281298) | [Aurelien Ribon](https://appshunter.io/developer/1737509079) |

## What reviewers say

### Belimo Assistant 2

[App page](https://appshunter.io/ios/app/belimo-assistant-2/id6475810004)

This app allows for the setup, operation, and troubleshooting of Belimo devices like actuators and valves using a smartphone or tablet. It offers features for checking parameters, monitoring device status, and generating reports.

**Highlights:** Device parameter modification, Identification data display, MP-Bus, BACnet, Modbus addressing, Guided parameter setup, Configuration copy/paste, Live trending and local override, Device health and operation monitoring, Digital report generation

**In-app purchases:** none


### AirBuilding

[App page](https://appshunter.io/ios/app/airbuilding-analytics/id6755592591)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 site | $24.99 | per month |


## Frequently asked questions

### Is Belimo Assistant 2 free?

Belimo Assistant 2 is free to download, with no in-app purchases.

### Is AirBuilding free?

AirBuilding is free to download, with in-app purchases available.

### Do Belimo Assistant 2 or AirBuilding have ads?

Neither Belimo Assistant 2 nor AirBuilding shows ads.

### Which is updated more often, Belimo Assistant 2 or AirBuilding?

Belimo Assistant 2 ships an update every 5 weeks, and AirBuilding fortnightly. Most recently, Belimo Assistant 2 was updated on October 6, 2026 and AirBuilding 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.*