Comparison

ISF Watchkeeper 4 vs SeaPath

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ISF Watchkeeper 4

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
Read full description

ISF Watchkeeper 4 mobile app enables seafarers to record their work and rest hours on smartphone and tablet. Timesheets are automatically tested against STCW, MLC 2006 and other international and local regulations for compliance purposes. The predictive calculation engine helps manage work and rest hours compliance for you, keeping you notified of up coming non-conformities and helping you remain compliant. Cloud-based and totally cross platform, ISF Watchkeeper 4 provides seafarers with an efficient yet simple mobile solution that is full of great innovations, showing live compliance status, allowing real time tracking and testing, whilst making it easy to log hours of work and rest, and plan-ahead to avoid regulatory breaches. - Works on or offline - Syncs to ISF Watchkeeper 4 Web App for real-time collaboration across teams - Realtime alerts and notifications of upcoming non-conformance - Monitor your live Compliance Status - Electronic timesheet signing and verification - Manage your work schedules - Automatically log hours by your work schedule - Manage vessel joining and leaving - Copy logged hours across multiple days - Reporting Dashboard - Cloud based, no vessel installation required - Simple, intuitive User Interfaces A truly global brand, accepted by Port State Control and recognised as the gold standard work and rest hour solution, ISF Watchkeeper is developed in partnership with the International Chamber of Shipping (ICS), whose members include over 80 percent of the global merchant fleet and who have represented the industry at the International Maritime Organization (IMO) and International Labour Organization (ILO) for more than 50 years. No more printing: you can electronically sign and lock timesheets and have them available on your mobile or online for inspection as per IMO guidelines for the signing, tracking and verification of electronic certificates. Your data is synced to the cloud and accessible via the ISF Watchkeeper 4 web app, offering seamless team collaboration and powerful management and reporting functionality from the shore. Furthermore, our dedicated support team are on hand to assist at every turn, getting you up and running and ensure your software operation runs smoothly. The app is packed full of innovative features, benefitting from constant development and evolution by working alongside professionals in the industry and harnessing the decades of experience working extensively in the shipping industry. ISF Watchkeeper 4 is the smart way to help operators comply with the requirements of the ILO (MLC, 2006) and IMO International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW).

About

SeaPath

Features
Read full description

SeaPath turns vessel activity into a connected record of your maritime career. MarineTraffic AIS data auto classifies sea service, update your calendar, track progress towards your next qualification, organise certificates and prepare through Study all in one app. SEA TIME & VESSEL TRACKING • Track current and historical vessel activity using MarineTraffic AIS data • Classify service as underway, at anchor, in port, in a shipyard and more • Review passages, confirm sea service, record leave and maintain a clear calendar • Keep your vessel and sea-time history organised PRO TRACKER • See your progress towards your next MCA qualification • Track sea-service and certificate requirements • Keep your professional pathway clear and current CERTIFICATE WALLET • Store certificate details and expiry dates • Receive reminders before certificates expire • Keep important professional records together STUDY • Practise maritime subjects and exam-style questions • Build confidence with interactive study tools • Prepare for your next qualification wherever you are SEASHARE • Turn your sea-time statistics into clean, shareable updates • Add photos using your camera or photo library THE CONNECTED SEAPATH JOURNEY AIS activity becomes classified sea service. Sea service updates your calendar. Your progress feeds Pro Tracker. Certificates remain organised. Study prepares you for your next qualification. SeaPath offers Plus and Pro subscription plans billed monthly or annually. Prices are displayed in the app before purchase. Payment is charged to your Apple Account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel subscriptions in your Apple Account settings. SeaPath is not affiliated with or endorsed by the MCA or any maritime authority. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://seapathapp.com/privacy

Screenshots

ISF Watchkeeper 44 screens
SeaPath4 screens

Verdict

The call

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.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

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.

UpkeepUpdate frequency

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.

Scorecard1 real difference Ā· 7 level
ISF Watchkeeper 4 versus SeaPath: the parameters behind the verdict, then further details
ParameterISF Watchkeeper 4SeaPath
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size39 MB66 MB
Age rating4+4+
DeveloperIT EnergySeaPath Limited

In-app purchases

None

ISF Watchkeeper 4

No in-app purchases

4 purchases

SeaPath

Subscriptions4
  • SeaPath Plus1 Month trial$9.991 Month
  • SeaPath Pro Monthly1 Month trial$14.991 Month
  • SeaPath Starter Annual1 Month trial$99.991 Year
Show 1 more
  • SeaPath Pro Annual1 Month trial$149.991 Year

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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