# CSS Mobile Security vs Oldboy EU

CSS Mobile Security and Oldboy EU are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CSS Mobile Security ships an update every 9 months, Oldboy EU every 16 months. The most recent releases landed on September 29, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | CSS Mobile Security | Oldboy EU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 16 months |
| Size | 14 MB | 86 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pingjen Chang](https://appshunter.io/developer/1503143816) | [Eldar Mirzoev](https://appshunter.io/developer/1494562646) |

## What reviewers say

### CSS Mobile Security

[App page](https://appshunter.io/ios/app/css-mobile-security/id1503143817)

**Features:** macOS Compatibility

**In-app purchases:** none


### Oldboy EU

[App page](https://appshunter.io/ios/app/oldboy-eu/id1630149394)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CSS Mobile Security free?

CSS Mobile Security is free to download, with no in-app purchases.

### Is Oldboy EU free?

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

### Do CSS Mobile Security or Oldboy EU have ads?

Neither CSS Mobile Security nor Oldboy EU shows ads.

### Which is updated more often, CSS Mobile Security or Oldboy EU?

CSS Mobile Security ships an update every 9 months, and Oldboy EU every 16 months. Most recently, CSS Mobile Security was updated on September 29, 2026 and Oldboy EU on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*