# KAT Online vs Спектр

The clearest difference is update cadence: Спектр at every 4 months against KAT Online's every 10 months. KAT Online's advantage is iOS requirement (13.0 vs 16.0). 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.

KAT Online ships an update every 10 months, Спектр every 4 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | KAT Online | Спектр |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 4 months** |
| Size | 77 MB | 277 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Octys LLC](https://appshunter.io/developer/634902439) | [MobiMill LTD](https://appshunter.io/developer/1124936955) |

## What reviewers say

### KAT Online

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

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

**In-app purchases:** none


### Спектр

[App page](https://appshunter.io/ios/app/id6496357093)

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

**In-app purchases:** none


## Frequently asked questions

### Is KAT Online free?

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

### Is Спектр free?

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

### Do KAT Online or Спектр have ads?

Neither KAT Online nor Спектр shows ads.

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

KAT Online ships an update every 10 months, and Спектр every 4 months. Most recently, KAT Online was updated on October 27, 2026 and Спектр on October 27, 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.*