# OneSource Mobile App vs Usiminas

The clearest difference is update cadence: Usiminas at every 2 months against OneSource Mobile App's every 4 months. Usiminas also leads on iOS requirement (11.0 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.

OneSource Mobile App ships an update every 4 months, Usiminas every 2 months. The most recent releases landed on July 4, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | OneSource Mobile App | Usiminas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (13 ratings)](https://appshunter.io/ios/app/onesource-mobile-app/id1161779919/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 6 MB | 47 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SENTRICS HOLDINGS, LLC](https://appshunter.io/developer/1662595523) | [Usinas Siderurgicas de Minas Gerais S.A.](https://appshunter.io/developer/623394808) |

## What reviewers say

### OneSource Mobile App

[App page](https://appshunter.io/ios/app/onesource-mobile-app/id1161779919)

Receive and acknowledge alarms and events from your on-site emergency call system. The app provides audible alerts and enables real-time text and voice messaging with connected staff, even when the device screen is off.

**Highlights:** Alarm and event monitoring, Audible alerts for alarms, Text messaging with staff, Push-to-talk voice messages, Background audio alerts, Real-time communication

**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 OneSource Mobile App free?

OneSource Mobile App is free to download, with no in-app purchases.

### Is Usiminas free?

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

### Do OneSource Mobile App or Usiminas have ads?

Neither OneSource Mobile App nor Usiminas shows ads.

### Which is updated more often, OneSource Mobile App or Usiminas?

OneSource Mobile App ships an update every 4 months, and Usiminas every 2 months. Most recently, OneSource Mobile App was updated on July 4, 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.*