# Building Start vs Hy IMI

The clearest difference is update cadence: Building Start at monthly against Hy IMI's every 4 months. Hy IMI's advantage is iOS requirement (9.0 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 Start ships an update monthly, Hy IMI every 4 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Building Start | Hy IMI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (8 ratings)](https://appshunter.io/ios/app/building-start/id442975774/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | — |
| Size | 12 MB | 52 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Building Start](https://appshunter.io/developer/442975777) | [Krzysztof Hoffmann](https://appshunter.io/developer/1460705069) |

## What reviewers say

### Building Start

[App page](https://appshunter.io/ios/app/building-start/id442975774)

This platform digitizes field testing for construction and engineering projects. It allows for centralized test plan creation and offline execution on field devices, synchronizing data back to the cloud upon completion.

**Highlights:** Centralized test plan authoring, Push test plans to field devices, Offline field testing capabilities, Data synchronization to cloud, Digital capture of construction projects, Support for TAB, Building Startup, Commissioning, Energy Audits

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

**In-app purchases:** none


### Hy IMI

[App page](https://appshunter.io/ios/app/hy-imi/id1473037123)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Building Start free?

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

### Is Hy IMI free?

Hy IMI is free to download, with no in-app purchases.

### Do Building Start or Hy IMI have ads?

Neither Building Start nor Hy IMI shows ads.

### Which is updated more often, Building Start or Hy IMI?

Building Start ships an update monthly, and Hy IMI every 4 months. Most recently, Building Start was updated on October 23, 2026 and Hy IMI on October 26, 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.*