# A1mobile vs Ontrasys Pro

The clearest difference is update cadence: Ontrasys Pro at every 3 months against A1mobile's every 6 months. A1mobile's advantage is iOS requirement (8.0 vs 13.6). 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.

A1mobile ships an update every 6 months, Ontrasys Pro every 3 months. The most recent releases landed on October 29, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | A1mobile | Ontrasys Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 92 MB | 17 MB |
| Requires iOS | **8.0** | 13.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NTT EAST, Inc.](https://appshunter.io/developer/529670948) | [TOPPAN PRINTING CO.,LTD.](https://appshunter.io/developer/373909233) |

## What reviewers say

### A1mobile

[App page](https://appshunter.io/ios/app/a1mobile/id1065686053)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ontrasys Pro

[App page](https://appshunter.io/ios/app/ontrasys-pro/id1486536359)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is A1mobile free?

A1mobile is free to download, with no in-app purchases.

### Is Ontrasys Pro free?

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

### Do A1mobile or Ontrasys Pro have ads?

Neither A1mobile nor Ontrasys Pro shows ads.

### Which is updated more often, A1mobile or Ontrasys Pro?

A1mobile ships an update every 6 months, and Ontrasys Pro every 3 months. Most recently, A1mobile was updated on October 29, 2026 and Ontrasys Pro on October 3, 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.*