# ISF Watchkeeper 4 — Seafarer Rest Hours Compliance > Seafarer work and rest hours compliance tracking and management tool. (iPhone/iPad app by IT Energy.) - Source: https://appshunter.io/ios/app/isf-watchkeeper-4/id1517644023 (this page in markdown: same URL + `.md`) - Developer: [IT Energy](https://appshunter.io/developer/1406834686) - Category: Productivity, Business - Price: Free - Age rating: 4+ - Requires: iOS 15.0 · 40 MB - Released: 2020-07-08 - Data updated: 2026-09-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/isf-watchkeeper-4/id1517644023/reviews.md ## What is ISF Watchkeeper 4? 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). ## Key features - Automatic compliance testing - Predictive calculation engine - Real-time alerts and notifications - Live compliance status monitoring - Electronic timesheet signing - Cloud-based collaboration - Offline functionality ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/isf-watchkeeper-4/id1517644023/reviews.md ### 5/5 — Hours of rest *2024-04-03* A lot easier than paper sheets, easy to track 10/10 ### 2/5 — Wow *2021-06-02* I'm pretty sure no-one uses this app out of choice, however, this is a shocker. I've seen Model-T's that start more reliably than this thing. If you can get it to start without crashing(which is a long shot) then it will probably not let you log in. Once you're in the gui is fine and pretty nifty, but i think i would prefer 40 lines of python the redirect to a browser-in-a-box version of the website. 2 stars **Developer response:** Thank you for taking the time to write a review and sorry to hear you had problems using the app. Indeed, we have recently released a new version which tackles previous login issues and loading speeds and focusses on better usability and a much more stable performance, as well as some extra new features. Should you find any further issues please contact us at support@isfwatchkeeper.com and we’d be happy to assist. ## Frequently asked questions about ISF Watchkeeper 4 ### What is ISF Watchkeeper 4? ISF Watchkeeper 4 is a mobile application designed for seafarers to record and manage their work and rest hours. It automatically checks these hours against international regulations like STCW and MLC 2006 to ensure compliance. ### Does ISF Watchkeeper 4 work offline? Yes, ISF Watchkeeper 4 works on or offline, allowing seafarers to log their hours even without an internet connection. Data syncs to the cloud when a connection is available. ### How does ISF Watchkeeper 4 help with compliance? The app features a predictive calculation engine that tests timesheets against STCW, MLC 2006, and other regulations. It provides real-time alerts for upcoming non-conformities, helping users stay compliant. ### Can ISF Watchkeeper 4 be used for team collaboration? Yes, ISF Watchkeeper 4 syncs to its web app, enabling real-time collaboration across teams. This allows for seamless management and reporting from shore. ### What devices support ISF Watchkeeper 4? ISF Watchkeeper 4 is supported on iPhone, iPad, and iPod devices. It is designed to be a cross-platform solution. ### How often is ISF Watchkeeper 4 updated? The latest version is 3.0.15, last updated on March 24, 2026. The app benefits from constant development and evolution based on industry professional feedback. ### Is ISF Watchkeeper 4 free to use? Yes, ISF Watchkeeper 4 is available for free. There are no in-app purchases or advertisements mentioned. ### What is the age rating for ISF Watchkeeper 4? ISF Watchkeeper 4 has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals. ## Version history (last 5 releases) ### 3.0.30 — 2026-09-03 Hour record synchronisation ### 3.0.29 — 2026-09-01 Change Schedules ### 3.0.28 — 2026-08-15 Available vessels for user details ### 3.0.27 — 2026-07-24 Hub mode calculations ### 3.0.26 — 2026-07-17 Hub calculations ## Apps similar to ISF Watchkeeper 4 | App | Rating | Price | Category | | --- | --- | --- | --- | | [HRClick Crew](https://appshunter.io/ios/app/hrclick-crew/id1500264913) | — | Free | Productivity | | [Voly \| Workrest](https://appshunter.io/ios/app/voly-workrest/id1197375676) | 4.0 (3) | Free | Productivity | | [IDEA YACHT](https://appshunter.io/ios/app/idea-yacht/id1498067584) | — | Free | Productivity | | [Pinpoint Works](https://appshunter.io/ios/app/pinpoint-works/id1124039565) | 4.0 (4) | Free | Productivity | | [Yacht Forms](https://appshunter.io/ios/app/yacht-forms/id1619098180) | — | Free | Productivity | | [ISMo Forms](https://appshunter.io/ios/app/ismo-forms/id1475635634) | 5.0 (2) | Free | Productivity | ## More apps by IT Energy - [ISF Verify](https://appshunter.io/ios/app/isf-verify/id6747821602) All apps by IT Energy: https://appshunter.io/developer/1406834686 ## Related topics [malifaux 4e crew builder](https://appshunter.io/ios/topics/malifaux-4e-crew-builder) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*