# O2M vs ENSSO

The clearest difference is ads: ENSSO at none against O2M's shown. ENSSO also leads on update cadence (monthly vs every 9 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

O2M ships an update every 9 months, ENSSO monthly. The most recent releases landed on September 15, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | O2M | ENSSO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Monthly** |
| Size | 75 MB | 76 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dong Hyouck Kang](https://appshunter.io/developer/1573883661) | [heejin kim](https://appshunter.io/developer/1613636221) |

## What reviewers say

### O2M

[App page](https://appshunter.io/ios/app/o2m/id1573883659)

**Features:** macOS Compatibility

**In-app purchases:** none


### ENSSO

[App page](https://appshunter.io/ios/app/ensso/id1663097699)

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

**In-app purchases:** none


## Frequently asked questions

### Is O2M free?

O2M is free to download, with no in-app purchases.

### Is ENSSO free?

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

### Do O2M or ENSSO have ads?

O2M shows ads; ENSSO does not.

### Which is updated more often, O2M or ENSSO?

O2M ships an update every 9 months, and ENSSO monthly. Most recently, O2M was updated on September 15, 2026 and ENSSO on September 23, 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.*