# ISF Watchkeeper 4 vs SeaPath

The clearest difference is in-app purchases: ISF Watchkeeper 4 at none against SeaPath's 4. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SeaPath sells 4 in-app purchases, starting at $9.99 per month. ISF Watchkeeper 4 asks for nothing beyond the download.

ISF Watchkeeper 4 ships an update every 10 days, SeaPath every 3 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ISF Watchkeeper 4 | SeaPath |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 39 MB | 66 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [IT Energy](https://appshunter.io/developer/1406834686) | [SeaPath Limited](https://appshunter.io/developer/6784218987) |

## What reviewers say

### 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


### SeaPath

[App page](https://appshunter.io/ios/app/seapath/id6784218985)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SeaPath Plus | $9.99 | per month |
| SeaPath Pro Monthly | $14.99 | per month |
| SeaPath Starter Annual | $99.99 | per year |
| SeaPath Pro Annual | $149.99 | per year |


## Frequently asked questions

### Is ISF Watchkeeper 4 free?

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

### Is SeaPath free?

SeaPath is free to download, with in-app purchases available.

### Do ISF Watchkeeper 4 or SeaPath have ads?

Neither ISF Watchkeeper 4 nor SeaPath shows ads.

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

ISF Watchkeeper 4 ships an update every 10 days, and SeaPath every 3 weeks. Most recently, ISF Watchkeeper 4 was updated on November 3, 2026 and SeaPath on November 5, 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.*