# DURO ZONE FIT vs KO ZONE

The clearest difference is iOS requirement: KO ZONE at 13.5 against DURO ZONE FIT's 15.6. 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.

## The numbers

| Metric | DURO ZONE FIT | KO ZONE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | — |
| Size | 32 MB | 14 MB |
| Requires iOS | 15.6 | **13.5** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [duro zone fitness studio inc](https://appshunter.io/developer/1664840548) | [Knockout Zone Inc](https://appshunter.io/developer/1769378983) |

## What reviewers say

### DURO ZONE FIT

[App page](https://appshunter.io/ios/app/duro-zone-fit/id1664840546)

**Features:** macOS Compatibility

**In-app purchases:** none


### KO ZONE

[App page](https://appshunter.io/ios/app/ko-zone/id6698877892)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DURO ZONE FIT free?

DURO ZONE FIT is free to download, with no in-app purchases.

### Is KO ZONE free?

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

### Do DURO ZONE FIT or KO ZONE have ads?

Neither DURO ZONE FIT nor KO ZONE shows ads.

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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.*