# OPN vs Micro OPN

The clearest difference is update cadence: Micro OPN at every 4 weeks against OPN's every 14 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.

OPN ships an update every 14 months, Micro OPN every 4 weeks. The most recent releases landed on September 23, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | OPN | Micro OPN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 4 weeks** |
| Size | 5 MB | 106 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OPTOELECTRONICS Co.,Ltd.](https://appshunter.io/developer/556827248) | [杭州锦朋新能源有限公司](https://appshunter.io/developer/1770214362) |

## What reviewers say

### OPN

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

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

**In-app purchases:** none


### Micro OPN

[App page](https://appshunter.io/ios/app/micro-opn/id6714471486)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OPN free?

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

### Is Micro OPN free?

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

### Do OPN or Micro OPN have ads?

Neither OPN nor Micro OPN shows ads.

### Which is updated more often, OPN or Micro OPN?

OPN ships an update every 14 months, and Micro OPN every 4 weeks. Most recently, OPN was updated on September 23, 2026 and Micro OPN on September 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.*