# Voly Crew vs ISF Watchkeeper 4

The clearest difference is review sentiment: Voly Crew at 67% against ISF Watchkeeper 4's 50%. ISF Watchkeeper 4's advantage is monetization model (free vs ad-supported) and update cadence (every 10 days vs every 3 weeks). 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.

Voly Crew ships an update every 3 weeks, ISF Watchkeeper 4 every 10 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Voly Crew | ISF Watchkeeper 4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (4 ratings)](https://appshunter.io/ios/app/voly-crew/id1197375676/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Ad-supported | **Free** |
| Size | 65 MB | 39 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Voly Group](https://appshunter.io/developer/1691285642) | [IT Energy](https://appshunter.io/developer/1406834686) |

## What reviewers say

### Voly Crew

[App page](https://appshunter.io/ios/app/voly-crew/id1197375676)

Streamline crew management at sea with tools for logging rest hours, submitting leave requests, and tracking compliance. Collaborate in real-time with vessel managers and fellow crew members, whether online or offline.

**Highlights:** Log hours of rest, Create work profiles, Submit shore leave requests, Set In | Out status, Monitor rest hour compliance, Offline functionality, Real-time collaboration

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

**In-app purchases:** none


### ISF Watchkeeper 4

[App page](https://appshunter.io/ios/app/isf-watchkeeper-4/id1517644023)

This app helps seafarers track and manage their work and rest hours, ensuring compliance with international maritime regulations. It automatically tests timesheets against STCW and MLC 2006, providing real-time alerts for non-conformities and offering a cloud-based solution for easy access and team collaboration.

**Highlights:** Automatic compliance testing, Predictive calculation engine, Real-time alerts and notifications, Live compliance status monitoring, Electronic timesheet signing, Cloud-based collaboration, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Voly Crew free?

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

### Is ISF Watchkeeper 4 free?

ISF Watchkeeper 4 is free to download, with no in-app purchases.

### Do Voly Crew or ISF Watchkeeper 4 have ads?

Neither Voly Crew nor ISF Watchkeeper 4 shows ads.

### Which is updated more often, Voly Crew or ISF Watchkeeper 4?

Voly Crew ships an update every 3 weeks, and ISF Watchkeeper 4 every 10 days. Most recently, Voly Crew was updated on October 26, 2026 and ISF Watchkeeper 4 on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*