# STACK Construction Management vs Usiminas

The clearest difference is in-app purchases: Usiminas at none against STACK Construction Management's 1. Usiminas also leads on iOS requirement (11.0 vs 15.0). STACK Construction Management's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. STACK Construction Management sells 1 in-app purchase, starting at $599.00 per year. Usiminas asks for nothing beyond the download.

STACK Construction Management ships an update fortnightly, Usiminas every 2 months. The most recent releases landed on September 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | STACK Construction Management | Usiminas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (8 ratings)](https://appshunter.io/ios/app/stack-construction-management/id1221957820/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 196 MB | 47 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [STACK Construction Canada Inc.](https://appshunter.io/developer/1296418375) | [Usinas Siderurgicas de Minas Gerais S.A.](https://appshunter.io/developer/623394808) |

## What reviewers say

### STACK Construction Management

[App page](https://appshunter.io/ios/app/stack-construction-management/id1221957820)

Access and mark up digital construction plans directly on the jobsite. This app allows crews to work offline, manage issues with photo uploads, and streamline project communication for increased field productivity.

**Highlights:** Digital plan access and markup, Offline work capability, Issue management with photo uploads, Real-time plan comparison, Streamlined daily reports, Automated hyperlinking of details

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly subscription | $599.00 | per year |


### Usiminas

[App page](https://appshunter.io/ios/app/usiminas-extranet-mobile/id1662385060)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STACK Construction Management free?

STACK Construction Management is free to download, with in-app purchases available.

### Is Usiminas free?

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

### Do STACK Construction Management or Usiminas have ads?

Neither STACK Construction Management nor Usiminas shows ads.

### Which is updated more often, STACK Construction Management or Usiminas?

STACK Construction Management ships an update fortnightly, and Usiminas every 2 months. Most recently, STACK Construction Management was updated on September 18, 2026 and Usiminas on September 12, 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.*