Bosun's Mate

Vessel log every captain wants

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Meet the new Safety Compliance tracker. Flares, extinguishers, PFDs, hull insurance — we now warn you 30 days before anything expires. Bosun's Mate is the vessel management system every mariner wishes they had. Engine hours. Fuel logs. Parts catalogs. Receipts. Cruising notes. Everything that matters about your boat — captured beautifully, totalled automatically. Searchable. Cross-linked. Never lost. WHY CAPTAINS LOVE IT — Multi-engine support for twin and quad rigs. Track port, starboard, and beyond — each engine logged independently with its own service intervals, fuel economy, and hours. — AI receipt OCR. Snap a photo of a parts receipt and Bosun's Mate reads every line item in 8 seconds. Vendor, OEM numbers, prices — extracted, organized, and added to your catalog. No more squinting at fading thermal paper. — Multi-page survey extraction. Drop in a marine survey PDF and the AI pulls engine specs, hull data, electronics, and equipment into your vessel profile automatically. Saves hours of manual entry every time you buy a new boat. — Per-engine fuel economy. See exactly which engine is burning more fuel at any RPM. Charts compare engines side-by-side at every cruise speed. Spot a lazy engine before it costs you thousands in repairs. — Cruising log with photos. Document every trip with notes, weather, distance, and on-the-water photography. Build a permanent record of your adventures. — Cost tracking that actually balances. Every receipt is logged with category, vendor, and date. Year-to-date costs always one tap away. — Activity feed. Chronological view of every change — yours and your crew's. Like git history, but for your boat. — Co-Captain shared access. Invite your spouse, captain, or trusted crew with read-only or full-edit permissions. Everyone looking at the same data. — Offline-capable. Works on the water with no signal. Syncs the moment you're back at the dock. — Photo attachments on every entry. Document parts, damage, repairs visually. WHAT YOU CAN TRACK — Maintenance (oil changes, service intervals, anode replacement) — Fuel purchases and fuel-economy data points — Parts catalogs (with OEM and aftermarket numbers, grouped by manufacturer) — Zincs and consumables with replacement schedules — Surveys, manuals, and reference documents — Cruising logs with destinations, distances, and photos — Custom categories you define yourself PRIVACY FIRST Sign in with Apple or email — your choice. We never sell your data, never track you across other apps, and never share with advertisers. Account deletion is one tap in Settings — your data is permanently removed within minutes. SUBSCRIPTIONS Bosun's Mate is free to download with a 7-day free trial of all features. After the trial, continue with an auto-renewable subscription: — Bosun's Mate Pro Monthly — 1-month auto-renewing subscription — Bosun's Mate Pro Annual — 1-year auto-renewing subscription Payment is charged to your Apple ID at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID Account Settings > Subscriptions. Terms of Use (EULA): https://bosunsmate.app/terms Privacy Policy: https://bosunsmate.app/privacy Built by mariners. For mariners.

Ratings & Reviews

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Introducing the Safety Compliance tab — the easiest way to keep your vessel USCG-ready. • Track flares, fire extinguishers, and PFDs in one place • Automatic expiry math (42 months for flares, 12 years for extinguishers) • Red and amber alerts on your dashboard 30 days before anything expires • USCG minimum-equipment reference guide, plus links for Transport Canada, MCA (UK), AMSA (Australia), and Maritime NZ Hull Insurance Renewal Tracker (Pro) Log your renewal date and we'll flag it on your dashboard as it approaches — plus send a friendly email reminder 14 days before, so coverage never lapses. New Blog Dockside reading at bosunsmate.app/blog — starting with "The Vessel Carfax: Why Digital Logs are the New Standard for Marine Resale."

Version 1.5.4

The developer, Sean Bell, 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 Linked to You

    The following data may be collected and linked to your identity:

    • Purchases
    • Location
    • Contact Info
    • User Content
    • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • VoiceOver

    • Larger Text

    • Differentiate Without Color Alone

    • Sufficient Contrast

    • Reduced Motion

For more information, visit the developer’s accessibility website .

Information

Seller
  • Sean Bell
Size
  • 157.4 MB
Category
  • Lifestyle
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 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.
Languages
  • English
Age Rating
4+
In-App Purchases
Yes
  • Bosun's Mate Pro $4.99
  • Bosun's Mate Annual $49.99
  • Learn More
Copyright
  • © 2026 Sean Bell
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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