# Mamoru PUSH vs O

The clearest difference is update cadence: O at every 5 weeks against Mamoru PUSH's every 3 months. Mamoru PUSH's advantage is iOS requirement (13.0 vs 15.5). 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.

Mamoru PUSH ships an update every 3 months, O every 5 weeks. The most recent releases landed on September 14, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Mamoru PUSH | O |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Size | 33 MB | 4 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Colorkrew Inc.](https://appshunter.io/developer/715455152) | [O-TECH JAPAN](https://appshunter.io/developer/1219186631) |

## What reviewers say

### Mamoru PUSH

[App page](https://appshunter.io/ios/app/mamoru-push/id1212651274)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### O

[App page](https://appshunter.io/ios/app/o-tech-ms/id1645041946)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mamoru PUSH free?

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

### Is O free?

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

### Do Mamoru PUSH or O have ads?

Neither Mamoru PUSH nor O shows ads.

### Which is updated more often, Mamoru PUSH or O?

Mamoru PUSH ships an update every 3 months, and O every 5 weeks. Most recently, Mamoru PUSH was updated on September 14, 2026 and O on September 13, 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.*