Watchkeeper App
Crew watch bills, offline
Only for iPhone
$5.99 · Designed for iPhone. Not verified for macOS.
iPhone
Offline watch-bill planner for sailors: proven rotas or build your own, STCW rest checks, daylight scheduling, and a live on-watch clock. For sailors, by sailors.
The Watchkeeper App builds and runs your boat's watch bill — offline, private, and made for the way crews actually stand watch.
Whether you're crossing an ocean or running a delivery, Watchkeeper turns your crew list into a fair, legal, easy-to-read rotation in minutes — then keeps it running through the whole passage.
BUILD THE ROTATION YOUR WAY
• Proven patterns — circadian (Swedish/Navy), traditional four-on/eight-off, and more — or build your own from scratch.
• Two-, three-, four-crew and larger; individuals or teams.
• Drag to reshape any watch; edit a single day or the whole cycle.
STAND THE WATCH
• See who's on now and who's next, in boat time.
• Alarms before every watch — Time-Sensitive, so they break through Focus.
• Heavy-weather mode shortens watches with one tap and eases back off when it passes.
REST THAT HOLDS UP
• Automatic STCW rest checks flag a rotation that won't give the crew legal rest.
SHARE IT, PRINT IT
• Send a shipmate the whole voyage by QR, AirDrop, message, or email — they scan and it's loaded.
• Print a one-page watch bill for the bulkhead, with a scan-to-load code.
ON THE WATER
• Set the ship's clock to your longitude, mark a man-overboard reference and steer back to it, and keep a position log.
PRIVATE BY DESIGN
Watchkeeper has no account and no servers. Your schedules, vessel, and crew never leave your device — we can't see them. Sharing is peer-to-peer; we never see who you send to.
For sailors, by sailors.
New in 1.1.0
- Build your own watch bill — the new "Go Custom" builder lets you set how many watches a day, then stack the options that fit (longer or shorter nights, a long midday watch, extra rest) and choose how the rota rotates: everyone rotating, dogged, or a fixed circadian watch.
- Daylight-only scheduling — clip the watches to the daylight window (sunrise to sunset for your GPS position), shown in boat time.
- Schedule descriptions — every watch bill now carries a plain-language summary of how it works, right on the Watch Bill.
Fixes & polish
- Fixed a crash when opening the 10-crew schedules in All Schedules.
- Smoother scrolling and a range of small refinements throughout.
For sailors, by sailors.
The developer, Edward McCreary, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Edward McCreary
- Size
- 34.9 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 McCreary Aviation LLC
