# OEI Sim Pro vs qubeCTG by SKILLQUBE

The clearest difference is update cadence: qubeCTG by SKILLQUBE at every 3 months against OEI Sim Pro's every 23 months. OEI Sim Pro's advantage is iOS requirement (14.1 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

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

OEI Sim Pro ships an update every 23 months, qubeCTG by SKILLQUBE every 3 months. The most recent releases landed on September 8, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | OEI Sim Pro | qubeCTG by SKILLQUBE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 3 months** |
| Size | 112 MB | 125 MB |
| Requires iOS | **14.1** | 16.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Operative Experience Inc](https://appshunter.io/developer/1309239394) | [SKILLQUBE GmbH](https://appshunter.io/developer/1390516943) |

## What reviewers say

### OEI Sim Pro

[App page](https://appshunter.io/ios/app/oei-sim-pro/id1576212260)

**Features:** macOS Compatibility

**In-app purchases:** none


### qubeCTG by SKILLQUBE

[App page](https://appshunter.io/ios/app/qubectg-by-skillqube/id1661480220)

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

**In-app purchases:** none


## Frequently asked questions

### Is OEI Sim Pro free?

OEI Sim Pro is free to download, with no in-app purchases.

### Is qubeCTG by SKILLQUBE free?

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

### Do OEI Sim Pro or qubeCTG by SKILLQUBE have ads?

Neither OEI Sim Pro nor qubeCTG by SKILLQUBE shows ads.

### Which is updated more often, OEI Sim Pro or qubeCTG by SKILLQUBE?

OEI Sim Pro ships an update every 23 months, and qubeCTG by SKILLQUBE every 3 months. Most recently, OEI Sim Pro was updated on September 8, 2026 and qubeCTG by SKILLQUBE on August 14, 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.*