# Project HD vs Usiminas

The clearest difference is price: Usiminas at Free against Project HD's $0.99. Usiminas also leads on update cadence (every 2 months vs every 37 months) and device support (3 vs 1). Project HD's advantage is iOS requirement (9.0 vs 11.0). On ads and in-app purchases there is nothing between them.

Usiminas is free to download; Project HD costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Project HD ships an update every 37 months, Usiminas every 2 months. The most recent releases landed on June 7, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Project HD | Usiminas |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 2 months** |
| Size | 2 MB | 47 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JOhn Lyons](https://appshunter.io/developer/571586394) | [Usinas Siderúrgicas de Minas Gerais S.A.](https://appshunter.io/developer/623394808) |

## What reviewers say

### Project HD

[App page](https://appshunter.io/ios/app/project-hd/id720512266)

**Features:** macOS Compatibility

**In-app purchases:** none


### Usiminas

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Project HD free?

Project HD costs $0.99, with no in-app purchases.

### Is Usiminas free?

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

### Do Project HD or Usiminas have ads?

Neither Project HD nor Usiminas shows ads.

### Which is updated more often, Project HD or Usiminas?

Project HD ships an update every 37 months, and Usiminas every 2 months. Most recently, Project HD was updated on June 7, 2026 and Usiminas on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*