# Onix Worker vs Skiftkalender

The clearest difference is price: Onix Worker at Free against Skiftkalender's $5.99. Skiftkalender's advantage is update cadence (every 5 days vs every 3 months) and iOS requirement (13.4 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Onix Worker is free to download; Skiftkalender costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Onix Worker ships an update every 3 months, Skiftkalender every 5 days. Both last shipped on September 9, 2026.

## The numbers

| Metric | Onix Worker | Skiftkalender |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 36 MB | 21 MB |
| Requires iOS | 16.0 | **13.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Onix](https://appshunter.io/developer/1046739339) | [THOMAS GRAVDAL](https://appshunter.io/developer/1729760524) |

## What reviewers say

### Onix Worker

[App page](https://appshunter.io/ios/app/onix-worker/id1624611016)

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

**In-app purchases:** none


### Skiftkalender

[App page](https://appshunter.io/ios/app/skiftkalender/id6499107910)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Onix Worker free?

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

### Is Skiftkalender free?

Skiftkalender costs $5.99, with no in-app purchases.

### Do Onix Worker or Skiftkalender have ads?

Neither Onix Worker nor Skiftkalender shows ads.

### Which is updated more often, Onix Worker or Skiftkalender?

Onix Worker ships an update every 3 months, and Skiftkalender every 5 days. Most recently, Onix Worker was updated on September 9, 2026 and Skiftkalender on September 9, 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.*