# KADRIS 4 Mobile vs Volos

The clearest difference is update cadence: KADRIS 4 Mobile at fortnightly against Volos's every 2 months. Volos's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.4). 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.

KADRIS 4 Mobile ships an update fortnightly, Volos every 2 months. The most recent releases landed on October 29, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | KADRIS 4 Mobile | Volos |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Size | 77 MB | 7 MB |
| Requires iOS | 17.4 | **11.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Četrta pot, d. o. o. Kranj](https://appshunter.io/developer/1361568387) | [Administration of the Republic of Slovenia for Food Safety, Veterinary Sector and Plant Protection](https://appshunter.io/developer/1205433781) |

## What reviewers say

### KADRIS 4 Mobile

[App page](https://appshunter.io/ios/app/kadris-4-mobile/id1456104426)

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

**In-app purchases:** none


### Volos

[App page](https://appshunter.io/ios/app/volos/id6444155316)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KADRIS 4 Mobile free?

KADRIS 4 Mobile is free to download, with no in-app purchases.

### Is Volos free?

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

### Do KADRIS 4 Mobile or Volos have ads?

Neither KADRIS 4 Mobile nor Volos shows ads.

### Which is updated more often, KADRIS 4 Mobile or Volos?

KADRIS 4 Mobile ships an update fortnightly, and Volos every 2 months. Most recently, KADRIS 4 Mobile was updated on October 29, 2026 and Volos on November 7, 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.*