# A4 Mobile

> A4 Mobile (iPhone/iPad app by Weiran Zhang.)

- Source: https://appshunter.io/ios/app/a4-mobile/id799386220 (this page in markdown: same URL + `.md`)
- Developer: [Weiran Zhang](https://appshunter.io/developer/588120679)
- Category: Business
- Price: Free
- Age rating: 4+
- Requires: iOS 14.0 · 10 MB
- Languages: American English
- Released: 2014-01-23
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/a4-mobile/id799386220/reviews.md

## What is A4 Mobile?

This app is part of the A4 Solutions’ Steel Plant Level 3 system that provides the real time plant status, report and operation statistics information. It is a valuable tool for steel plant operation and the management team in improving productivity and reducing cost.


## Version history (last 5 releases)

### 1.6.0 — 2026-08-13

Updates to support the latest versions of iOS.

### 1.5.1 — 2022-07-30

Minor updates to support the newest iOS versions.

### 1.4 — 2019-05-18

• Added support for new Level 3 system
• Improvements to UI

### 1.3 — 2016-12-14

Added authentication
Fixed bugs

### 1.2 — 2015-10-29

Support for multiple organisations

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| [mSign](https://appshunter.io/ios/app/msign/id1450145100) | — | Free | Business |
| [RotaOne Self-Service](https://appshunter.io/ios/app/rotaone-self-service/id1570295033) | — | Free | Business |

## More apps by Weiran Zhang

- [Hackers for Hacker News](https://appshunter.io/ios/app/hackers-for-hacker-news/id603503901)
- [Infinite Loop](https://appshunter.io/ios/app/infinite-loop/id1076098267)
- [Watch It Later](https://appshunter.io/ios/app/watch-it-later/id1191095941)

All apps by Weiran Zhang: https://appshunter.io/developer/588120679

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*