# Bausteine der BG BAU vs 123onsite

The clearest difference is update cadence: 123onsite at fortnightly against Bausteine der BG BAU's every 11 months. Bausteine der BG BAU's advantage is review sentiment (55% vs 38%) and iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Bausteine der BG BAU ships an update every 11 months, 123onsite fortnightly. The most recent releases landed on November 6, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Bausteine der BG BAU | 123onsite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/123onsite/id946458430/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **55.0% of reviews** | 38.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 67 MB | 19 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BC GmbH](https://appshunter.io/developer/482014499) | [123erfasst.de GmbH](https://appshunter.io/developer/946458429) |

## What reviewers say

### Bausteine der BG BAU

[App page](https://appshunter.io/ios/app/bausteine-der-bg-bau/id482014496)

This app provides concise safety tips and important information for the construction industry. It uses illustrations to quickly convey key details, helping to prevent accidents and health hazards. Links to additional resources are also included for in-depth learning.

**Highlights:** Compressed safety information, Illustrated safety tips, Accident prevention guidance, Health hazard prevention, Links to further material

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

**In-app purchases:** none


### 123onsite

[App page](https://appshunter.io/ios/app/123onsite/id946458430)

This app connects construction sites with the office, allowing for easy recording and sharing of site activities. It offers customizable modules for time tracking, payroll, and project management, saving time and costs.

**Highlights:** Real-time site-to-office connection, Customizable modules (time tracking, payroll, etc.), Digital site diary, Equipment management, Task and defect tracking, Photo documentation, Customizable access permissions

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

**In-app purchases:** none


## Frequently asked questions

### Is Bausteine der BG BAU free?

Bausteine der BG BAU is free to download, with no in-app purchases.

### Is 123onsite free?

123onsite is free to download, with no in-app purchases.

### Do Bausteine der BG BAU or 123onsite have ads?

Neither Bausteine der BG BAU nor 123onsite shows ads.

### Which is updated more often, Bausteine der BG BAU or 123onsite?

Bausteine der BG BAU ships an update every 11 months, and 123onsite fortnightly. Most recently, Bausteine der BG BAU was updated on November 6, 2026 and 123onsite on November 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.*