# OPN vs UD MCA

The clearest difference is update cadence: UD MCA at every 6 weeks against OPN's every 14 months. OPN's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.6). On price, 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.

OPN ships an update every 14 months, UD MCA every 6 weeks. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | OPN | UD MCA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 6 weeks** |
| Size | 5 MB | 14 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [OPTOELECTRONICS Co.,Ltd.](https://appshunter.io/developer/556827248) | [UD Trucks Corporation](https://appshunter.io/developer/708408115) |

## What reviewers say

### OPN

[App page](https://appshunter.io/ios/app/opn-ime/id1123259151)

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

**In-app purchases:** none


### UD MCA

[App page](https://appshunter.io/ios/app/ud-mca/id6739557534)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OPN free?

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

### Is UD MCA free?

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

### Do OPN or UD MCA have ads?

Neither OPN nor UD MCA shows ads.

### Which is updated more often, OPN or UD MCA?

OPN ships an update every 14 months, and UD MCA every 6 weeks. Most recently, OPN was updated on October 13, 2026 and UD MCA on October 5, 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.*