# OPN vs essentry

The clearest difference is update cadence: essentry at every 2 months against OPN's every 14 months. OPN's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 15.1). 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, essentry every 2 months. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | OPN | essentry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 2 months** |
| Size | 5 MB | 18 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [OPTOELECTRONICS Co.,Ltd.](https://appshunter.io/developer/556827248) | [Essentry GmbH](https://appshunter.io/developer/1570105753) |

## What reviewers say

### OPN

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

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

**In-app purchases:** none


### essentry

[App page](https://appshunter.io/ios/app/essentry/id1293249195)

**In-app purchases:** none


## Frequently asked questions

### Is OPN free?

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

### Is essentry free?

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

### Do OPN or essentry have ads?

Neither OPN nor essentry shows ads.

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

OPN ships an update every 14 months, and essentry every 2 months. Most recently, OPN was updated on October 13, 2026 and essentry on October 3, 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.*