A4 Mobile vs mSign
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A4 Mobile
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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.
mSign
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This mobile application enables you to digitally sign PDF documents using your personal signature on your iPhone or iPad.
Screenshots
Verdict
The clearest difference is update cadence: mSign at every 2 weeks against A4 Mobile's every 25 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
A4 Mobile ships an update every 25 months, mSign every 2 weeks. The most recent releases landed on September 21, 2026 and September 13, 2026 respectively.
| Parameter | A4 Mobile | mSign |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 25 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 14.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 10 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Weiran Zhang | Mikrografija d.o.o. |
In-app purchases
A4 Mobile
No in-app purchases
mSign
No in-app purchases
