# Idus IS vs Building X Fire Connect

The clearest difference is iOS requirement: Idus IS at 13.0 against Building X Fire Connect's 16.0. 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.

Idus IS ships an update every 3 months, Building X Fire Connect every 2 months. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Idus IS | Building X Fire Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/building-x-fire-connect/id6452015285/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 136 MB | 37 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IDUS AB](https://appshunter.io/developer/780399497) | [Siemens AG](https://appshunter.io/developer/394503271) |

## What reviewers say

### Idus IS

[App page](https://appshunter.io/ios/app/idus-is/id780399494)

**Features:** macOS Compatibility

**In-app purchases:** none


### Building X Fire Connect

[App page](https://appshunter.io/ios/app/building-x-fire-connect/id6452015285)

Monitor the live status of connected Siemens Fire protection systems remotely. View current and historical events, and receive customizable push notifications based on your role for constant awareness and peace of mind.

**Highlights:** Remote system status monitoring, Live site status view, Current and historical event logs, Customizable push notifications, Role-based alerts

**In-app purchases:** none


## Frequently asked questions

### Is Idus IS free?

Idus IS is free to download, with no in-app purchases.

### Is Building X Fire Connect free?

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

### Do Idus IS or Building X Fire Connect have ads?

Neither Idus IS nor Building X Fire Connect shows ads.

### Which is updated more often, Idus IS or Building X Fire Connect?

Idus IS ships an update every 3 months, and Building X Fire Connect every 2 months. Most recently, Idus IS was updated on October 10, 2026 and Building X Fire Connect on October 25, 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.*