# Inventory ONE vs QualityCircle

The clearest difference is update cadence: Inventory ONE at every 9 days against QualityCircle's every 2 months. Inventory ONE 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.

Inventory ONE ships an update every 9 days, QualityCircle every 2 months. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Inventory ONE | QualityCircle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 months |
| Size | 60 MB | 18 MB |
| Requires iOS | **15.5** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Inventory ONE GmbH](https://appshunter.io/developer/1478503226) | [IT-Kompass GmbH](https://appshunter.io/developer/1441876911) |

## What reviewers say

### Inventory ONE

[App page](https://appshunter.io/ios/app/inventory-one/id1581113331)

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

**In-app purchases:** none


### QualityCircle

[App page](https://appshunter.io/ios/app/qualitycircle/id1596450796)

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

**In-app purchases:** none


## Frequently asked questions

### Is Inventory ONE free?

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

### Is QualityCircle free?

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

### Do Inventory ONE or QualityCircle have ads?

Neither Inventory ONE nor QualityCircle shows ads.

### Which is updated more often, Inventory ONE or QualityCircle?

Inventory ONE ships an update every 9 days, and QualityCircle every 2 months. Most recently, Inventory ONE was updated on October 4, 2026 and QualityCircle on October 1, 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.*