# Building Start vs INRS FieldApp Mobile

The clearest difference is update cadence: Building Start at monthly against INRS FieldApp Mobile's every 2 months. INRS FieldApp Mobile's advantage is iOS requirement (8.0 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, INRS FieldApp Mobile every 2 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Building Start | INRS FieldApp Mobile |
| --- | --- | --- |
| 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 2 months |
| Monetization | Free | — |
| Size | 12 MB | 46 MB |
| Requires iOS | 15.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Building Start](https://appshunter.io/developer/442975777) | [INRS Enterprises, LLC](https://appshunter.io/developer/1501786420) |

## 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


### INRS FieldApp Mobile

[App page](https://appshunter.io/ios/app/inrs-fieldapp-mobile/id1501786421)

**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 INRS FieldApp Mobile free?

INRS FieldApp Mobile is free to download, with no in-app purchases.

### Do Building Start or INRS FieldApp Mobile have ads?

Neither Building Start nor INRS FieldApp Mobile shows ads.

### Which is updated more often, Building Start or INRS FieldApp Mobile?

Building Start ships an update monthly, and INRS FieldApp Mobile every 2 months. Most recently, Building Start was updated on November 1, 2026 and INRS FieldApp Mobile on November 7, 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.*