# qubeC3 by SKILLQUBE vs RetterTool

The clearest difference is review sentiment: RetterTool at 92% against qubeC3 by SKILLQUBE's 0%. RetterTool also leads on device support (3 vs 1). qubeC3 by SKILLQUBE's advantage is in-app purchases (none vs 5). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. RetterTool sells 5 in-app purchases, starting at $0.99 per month. qubeC3 by SKILLQUBE asks for nothing beyond the download.

qubeC3 by SKILLQUBE ships an update every 6 weeks, RetterTool every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | qubeC3 by SKILLQUBE | RetterTool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (3 ratings)](https://appshunter.io/ios/app/qubec3-by-skillqube/id1390516944/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | **91.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 154 MB | 19 MB |
| Requires iOS | **17.5** | 17.6 |
| Devices | iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [SKILLQUBE GmbH](https://appshunter.io/developer/1390516943) | [8devs GmbH](https://appshunter.io/developer/1517839277) |

## What reviewers say

### qubeC3 by SKILLQUBE

[App page](https://appshunter.io/ios/app/qubec3-by-skillqube/id1390516944)

This medical training app simulates the corpuls 3 device, allowing users to realistically adjust vital signs during training sessions. It is designed to replicate real-life scenarios for a more effective and high-quality learning experience.

**Highlights:** Corpuls 3 simulation, Realistic vital sign adjustment, Lifelike training scenarios, Controlled via qubeCONTROL app, Authentic system design

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

**In-app purchases:** none


### RetterTool

[App page](https://appshunter.io/ios/app/rettertool/id1605575736)

This app provides quick access to essential medical information and calculations for emergency and medical personnel. It includes tools for vital sign measurement, scoring systems, and various medical formulas to aid in patient assessment and treatment.

**Highlights:** Vital sign calculation (heart rate, respiratory rate), Medical scoring systems (qSOFA, APGAR, LAMS, GCS), Memory aids for protocols (ABCDE, SAMPLERS, ISBAR), Formula collection (burns, blood pressure, oxygen), Interactive EKG interpretation tool, Patient age-specific standard values

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro-Version Monatlich | $0.99 | per month |
| Kleines Trinkgeld | $0.99 | one-time |
| Mittleres Trinkgeld | $3.99 | one-time |
| Großes Trinkgeld | $8.99 | one-time |
| Pro-Version Lifetime | $22.99 | one-time |


## Frequently asked questions

### Is qubeC3 by SKILLQUBE free?

qubeC3 by SKILLQUBE is free to download, with no in-app purchases.

### Is RetterTool free?

RetterTool is free to download, with in-app purchases available.

### Do qubeC3 by SKILLQUBE or RetterTool have ads?

Neither qubeC3 by SKILLQUBE nor RetterTool shows ads.

### Which is updated more often, qubeC3 by SKILLQUBE or RetterTool?

qubeC3 by SKILLQUBE ships an update every 6 weeks, and RetterTool every 2 months. Most recently, qubeC3 by SKILLQUBE was updated on October 24, 2026 and RetterTool on October 25, 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.*