# KO vs Omni Relprev

KO and Omni Relprev 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.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | KO | Omni Relprev |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 143 MB | 25 MB |
| Requires iOS | 10.0 | **9.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [sung hwan cha](https://appshunter.io/developer/1470912236) | [VILAAPPS DESENVOLVIMENTO DE SISTEMAS LTDA](https://appshunter.io/developer/1594697114) |

## What reviewers say

### KO

[App page](https://appshunter.io/ios/app/ko-s/id1414788201)

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

**In-app purchases:** none


### Omni Relprev

[App page](https://appshunter.io/ios/app/omni-relprev/id1434690340)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KO free?

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

### Is Omni Relprev free?

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

### Do KO or Omni Relprev have ads?

Neither KO nor Omni Relprev shows ads.

### Which is updated more often, KO or Omni Relprev?

KO ships an update every 3 months, and Omni Relprev every 3 months. Most recently, KO was updated on November 2, 2026 and Omni Relprev on November 2, 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.*