# Нертус vs KAT Online

Нертус and KAT Online 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.

Нертус ships an update every 7 months, KAT Online every 10 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Нертус | KAT Online |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 10 months |
| Size | 31 MB | 77 MB |
| Requires iOS | **12.4** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MobiMill LTD](https://appshunter.io/developer/1124936955) | [Octys LLC](https://appshunter.io/developer/634902439) |

## What reviewers say

### Нертус

[App page](https://appshunter.io/ios/app/id1287919598)

**In-app purchases:** none


### KAT Online

[App page](https://appshunter.io/ios/app/kat-online/id6450671902)

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

**In-app purchases:** none


## Frequently asked questions

### Is Нертус free?

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

### Is KAT Online free?

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

### Do Нертус or KAT Online have ads?

Neither Нертус nor KAT Online shows ads.

### Which is updated more often, Нертус or KAT Online?

Нертус ships an update every 7 months, and KAT Online every 10 months. Most recently, Нертус was updated on October 26, 2026 and KAT Online on November 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.*