# CrewBrain vs RK

The clearest difference is update cadence: CrewBrain at fortnightly against RK's monthly. RK's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

CrewBrain ships an update fortnightly, RK monthly. The most recent releases landed on September 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | CrewBrain | RK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 68 MB | 37 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [CrewBrain GmbH](https://appshunter.io/developer/1593729634) | [Slobodan Kocevski](https://appshunter.io/developer/1864577738) |

## What reviewers say

### CrewBrain

[App page](https://appshunter.io/ios/app/crewbrain/id1593729632)

Streamline personnel planning for events with a central platform for requests and arrangements. It offers clear event displays, staff availability overviews, and automatic notifications to ensure efficient team management.

**Highlights:** Centralized request handling, Staff availability overview, Automatic notifications, Clear event display, iCal subscription, Time tracking, Assignment planning

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

**In-app purchases:** none


### RK

[App page](https://appshunter.io/ios/app/rk-wetzlar/id6757107150)

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

**In-app purchases:** none


## Frequently asked questions

### Is CrewBrain free?

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

### Is RK free?

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

### Do CrewBrain or RK have ads?

Neither CrewBrain nor RK shows ads.

### Which is updated more often, CrewBrain or RK?

CrewBrain ships an update fortnightly, and RK monthly. Most recently, CrewBrain was updated on September 8, 2026 and RK on September 19, 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.*