Boater's Companion
More than a great log book!
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Try it free for a month — no charge until your trial ends, and we'll even remind you! Your vessel's complete records, maintenance history, and safety gear in one place.
Your life on the water - more organized.
Boater's Companion does a lot more than log your trips. For your sailing dinghy, super yacht, and everything in between, we'll help keep your vessel's safety gear up to date, documents organized, parts inventory current, manuals at hand, and voyages documented in real time. We'll even track sea time for you and the crew!
SAFETY GEAR THAT'S ACTUALLY UP TO DATE
Life rafts, EPIRBs, flares, fire extinguishers, PLBs, life jackets — all of it expires. Boater's Companion tracks expiry dates and service intervals for every piece of safety equipment aboard, so you're never caught with gear that's out of date when you need it most.
MAINTENANCE, SIMPLIFIED
Log maintenance entries across every system on your vessel — engines, generators, watermaker, standing rigging, electronics, and more. Attach photos and receipts. Your entire service history lives in one place, synced across all your devices via iCloud.
KNOW YOUR VESSEL INSIDE AND OUT
Configure a full inventory of every system aboard — from engines and thrusters to sails and seacocks. Track specs, service intervals, spare parts, and associated documents for as much as you want, all in one place.
TRIP LOG & GPS TRACKING
Record every passage. Start a live trip and Boater's Companion records your GPS track automatically, even with the screen off. Review your route afterward, or log trips manually. Your complete voyage history is always at hand.
CREW MANAGEMENT & SEA TIME
Build a profile for everyone who sails with you. Link to their existing contacts on your phone, store emergency contact information, track sea time, and export it to PDF for official documentation.
CHECKLISTS & FLOAT PLANS
Create custom checklists for departure, arrival, and everything in between. Generate float plans to share with someone onshore before you leave the dock.
DOCUMENTS ON BOARD
Scan and store registration papers, insurance certificates, manuals, and other vessel documents directly in the app. Everything syncs to iCloud so it's with you wherever you are.
SYNCS ACROSS ALL YOUR DEVICES
Your vessel's data syncs seamlessly via iCloud across your iPhone and iPad — backed up and available even when you're offshore.
Boater's Companion requires an active subscription to access all features and tools. We offer a 1-month free trial for new users. After the trial period ends, the selected subscription auto-renews unless canceled as prescribed by the App Store.
COMING SOON: iPad functionality
Terms of Use: https://castingoffllc.com/apps/boat-captains-companion/terms
Privacy Policy: https://castingoffllc.com/apps/boat-captains-companion/privacy
Ratings & Reviews
Fixes to back-of-house entitlement process.
Updates to Terms of Use
Corrections to iCloud update process
Minor bug and stability updates
The developer, Casting Off, LLC, 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
- Casting Off, LLC
- Size
- 13.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Lifetime Access (via promo code) $499.99
- Monthly Subscription $3.99
- Annual Subscription $29.99
- Copyright
- © 2026 Casting Off, LLC