# Omaha System Reference II vs WondAdviseur

The clearest difference is update cadence: Omaha System Reference II at weekly against WondAdviseur's every 9 months. 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.

Omaha System Reference II ships an update weekly, WondAdviseur every 9 months. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Omaha System Reference II | WondAdviseur |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 months |
| Size | 18 MB | 14 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ecare Innovatie B.V.](https://appshunter.io/developer/1267905240) | [Convatec Nederland BV](https://appshunter.io/developer/1606936434) |

## What reviewers say

### Omaha System Reference II

[App page](https://appshunter.io/ios/app/omaha-system-reference-ii/id1450603395)

**Features:** Vision Pro support

**In-app purchases:** none


### WondAdviseur

[App page](https://appshunter.io/ios/app/wondadviseur/id1606936432)

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

**In-app purchases:** none


## Frequently asked questions

### Is Omaha System Reference II free?

Omaha System Reference II is free to download, with no in-app purchases.

### Is WondAdviseur free?

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

### Do Omaha System Reference II or WondAdviseur have ads?

Neither Omaha System Reference II nor WondAdviseur shows ads.

### Which is updated more often, Omaha System Reference II or WondAdviseur?

Omaha System Reference II ships an update weekly, and WondAdviseur every 9 months. Most recently, Omaha System Reference II was updated on October 16, 2026 and WondAdviseur on October 4, 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.*