# Zero for MobileIron vs OfficeMail for Rubus

The clearest difference is iOS requirement: OfficeMail for Rubus at 13.0 against Zero for MobileIron's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Zero for MobileIron ships an update monthly, OfficeMail for Rubus every 6 weeks. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Zero for MobileIron | OfficeMail for Rubus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 215 MB | 92 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Aderant Holdings Inc.](https://appshunter.io/developer/896510525) | [Appurity Connect Limited](https://appshunter.io/developer/1529411567) |

## What reviewers say

### Zero for MobileIron

[App page](https://appshunter.io/ios/app/zero-for-mobileiron/id1529270417)

**Features:** macOS Compatibility

**In-app purchases:** none


### OfficeMail for Rubus

[App page](https://appshunter.io/ios/app/officemail-for-rubus/id6443482052)

**In-app purchases:** none


## Frequently asked questions

### Is Zero for MobileIron free?

Zero for MobileIron is free to download, with no in-app purchases.

### Is OfficeMail for Rubus free?

OfficeMail for Rubus is free to download, with no in-app purchases.

### Do Zero for MobileIron or OfficeMail for Rubus have ads?

Neither Zero for MobileIron nor OfficeMail for Rubus shows ads.

### Which is updated more often, Zero for MobileIron or OfficeMail for Rubus?

Zero for MobileIron ships an update monthly, and OfficeMail for Rubus every 6 weeks. Most recently, Zero for MobileIron was updated on October 27, 2026 and OfficeMail for Rubus on November 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.*