# VULKAN vs Pet centar RS

The clearest difference is ads: Pet centar RS at none against VULKAN's shown. Pet centar RS also leads on update cadence (every 4 weeks vs every 3 months). VULKAN's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price 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.

VULKAN ships an update every 3 months, Pet centar RS every 4 weeks. The most recent releases landed on September 27, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | VULKAN | Pet centar RS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 4 weeks** |
| Size | 57 MB | 39 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GRIND WEB STUDIO LTD. OOD](https://appshunter.io/developer/573174733) | [Pet Network Internation d.o.o.](https://appshunter.io/developer/1585116832) |

## What reviewers say

### VULKAN

[App page](https://appshunter.io/ios/app/vulkan/id6753937723)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pet centar RS

[App page](https://appshunter.io/ios/app/pet-centar-rs/id6762190248)

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

**In-app purchases:** none


## Frequently asked questions

### Is VULKAN free?

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

### Is Pet centar RS free?

Pet centar RS is free to download, with no in-app purchases.

### Do VULKAN or Pet centar RS have ads?

VULKAN shows ads; Pet centar RS does not.

### Which is updated more often, VULKAN or Pet centar RS?

VULKAN ships an update every 3 months, and Pet centar RS every 4 weeks. Most recently, VULKAN was updated on September 27, 2026 and Pet centar RS on September 8, 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.*