# Isosec MIA vs OCS

The clearest difference is update cadence: Isosec MIA at every 5 months against OCS's every 12 months. 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.

Isosec MIA ships an update every 5 months, OCS every 12 months. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Isosec MIA | OCS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 12 months |
| Size | 9 MB | 138 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Isosec Ltd](https://appshunter.io/developer/932317463) | [University of Oxford](https://appshunter.io/developer/688778837) |

## What reviewers say

### Isosec MIA

[App page](https://appshunter.io/ios/app/isosec-mia/id973061745)

**Features:** macOS Compatibility

**In-app purchases:** none


### OCS

[App page](https://appshunter.io/ios/app/ocs-plus/id1514766032)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Isosec MIA free?

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

### Is OCS free?

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

### Do Isosec MIA or OCS have ads?

Neither Isosec MIA nor OCS shows ads.

### Which is updated more often, Isosec MIA or OCS?

Isosec MIA ships an update every 5 months, and OCS every 12 months. Most recently, Isosec MIA was updated on November 1, 2026 and OCS on November 7, 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.*