# CAS Vikar Booking vs Attender

The clearest difference is iOS requirement: CAS Vikar Booking at 11.0 against Attender's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CAS Vikar Booking ships an update every 2 months, Attender every 3 months. The most recent releases landed on September 20, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | CAS Vikar Booking | Attender |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 16 MB | 22 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CAS A/S](https://appshunter.io/developer/1116041140) | [Attender ApS](https://appshunter.io/developer/1594156056) |

## What reviewers say

### CAS Vikar Booking

[App page](https://appshunter.io/ios/app/cas-vikar-booking/id1116042011)

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

**In-app purchases:** none


### Attender

[App page](https://appshunter.io/ios/app/attender/id1594155664)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CAS Vikar Booking free?

CAS Vikar Booking is free to download, with no in-app purchases.

### Is Attender free?

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

### Do CAS Vikar Booking or Attender have ads?

Neither CAS Vikar Booking nor Attender shows ads.

### Which is updated more often, CAS Vikar Booking or Attender?

CAS Vikar Booking ships an update every 2 months, and Attender every 3 months. Most recently, CAS Vikar Booking was updated on September 20, 2026 and Attender on May 18, 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.*