# St2 Inventory vs Kuartus

The clearest difference is update cadence: Kuartus at weekly against St2 Inventory's every 6 months. Kuartus also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

St2 Inventory ships an update every 6 months, Kuartus weekly. The most recent releases landed on September 25, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | St2 Inventory | Kuartus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Size | 3 MB | 37 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Status 2 SL](https://appshunter.io/developer/1211456320) | [Keemetrix Systems, S.L.](https://appshunter.io/developer/1597719609) |

## What reviewers say

### St2 Inventory

[App page](https://appshunter.io/ios/app/st2-inventory/id1243075013)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kuartus

[App page](https://appshunter.io/ios/app/kuartus/id6445953704)

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

**In-app purchases:** none


## Frequently asked questions

### Is St2 Inventory free?

St2 Inventory is free to download, with no in-app purchases.

### Is Kuartus free?

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

### Do St2 Inventory or Kuartus have ads?

Neither St2 Inventory nor Kuartus shows ads.

### Which is updated more often, St2 Inventory or Kuartus?

St2 Inventory ships an update every 6 months, and Kuartus weekly. Most recently, St2 Inventory was updated on September 25, 2026 and Kuartus on October 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.*