VesselTwin: Boat Maintenance
Joao Lima Productivity iPhoneiPadiPod touch
VesselTwin: Boat Maintenance is a free Productivity app for iPhone and iPad by Joao Lima. Requires iOS 17.0. Updated October 15, 2026.
- Price
- Free
- on the App Store
- Size
- 26 MB
- Age 4+
- Updated
- Oct 15
- 2026 · v1.3.5
Screenshots
About VesselTwin: Boat Maintenance
Keep your boat's maintenance log, manuals, parts, and documents in one private place, see what's due next, and ask questions answered from your own records. Your records are private by default. We don't sell your personal information, we don't send your boat records to advertisers, and the AI providers we use can't train their models on your data. You can export or delete your account at any time. Use VesselTwin on iPhone and iPad while work is happening. Capture a photo at the dock, file a document in the yard, record a measurement onboard, or add a maintenance note before the details disappear. Capture drafts save locally first and sync when you are back online. KNOW WHAT'S DUE, FIND WHAT YOU NEED • Today shows what's overdue and what's coming up next. • My Boat organizes work, parts, documents, and photos by area, so a job lives where you expect it. • Keep a job as a to-do and find it again from My Boat, with To Do and History tracked separately. • First use offers a clear starting point: save a receipt, remember a job, or find a manual. Included manufacturer manuals show up even before you upload your own documents. KEEP THE BOAT RECORD TOGETHER • Maintain the boat profile, specifications, measurements, equipment, parts, and documents in one place. • Record maintenance and service history with the context future owners, operators, and technicians need. • Track expenses in your boat's reporting currency, see service costs alongside the work they describe, and tap through reports to see what's behind each total. CAPTURE FROM THE FIELD • Add photos, documents, measurements, maintenance notes, and issues from a focused capture flow. • Scan multi-page documents and recognize equipment serial numbers on device, then review before saving. • Keep working through unreliable marina connectivity with a local-first capture inbox. • Review, retry, and finish uploads when the connection returns. USE THE NATIVE TOOLS AROUND YOU • Glance at Next service and Readiness from private, offline Home Screen widgets. • Ask Siri to open a boat, begin a review-first capture, or read the next saved service date. • Find cached boats and record titles in Spotlight without indexing private notes or identifiers. FIND THE RIGHT CONTEXT • Search your private vessel records, starting from the boat you're already looking at. • Browse public boat-model knowledge and community experience. • Keep useful provider contacts near the vessel record. ASK YOUR BOAT • Ask questions in VesselTwin and get grounded answers from saved records, with sources you can open. • Reopen a saved Ask or Troubleshoot answer any time without asking again. • Troubleshoot walks through a symptom against this boat's manuals and service history. • Continue in the assistant you choose. You can also connect ChatGPT for basic, read-only boat questions; Owner Pro supports Claude and deeper questions across your records. • Private document text, notes, costs, identifiers, and stored locations stay off unless you explicitly allow access. • Optionally let a connected AI app propose notes, checklists, maintenance entries, and measurements. Every proposal waits in your Inbox until you accept it. COMMUNITY CONTROLS Share or publish only what you choose. Report community content and block members at any time. VesselTwin is built for boat owners and operators who want the boat's real history to be easier to capture, understand, and carry forward. OPTIONAL OWNER PRO SUBSCRIPTION Subscribe monthly or annually in the app for up to five boats, 100 document analyses per month, email-in capture, and optional AI-app permissions. Prices and billing periods are shown before purchase. Apple subscriptions renew automatically until canceled; manage or cancel in your Apple Account subscription settings. Core first-boat record keeping remains free. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.vesseltwin.io/privacy
What’s new
Version 1.3.5 · Updated October 15, 2026
Expense reporting in your currency, connected devices, and drafts that don't get lost. • Expenses: choose a reporting currency for your boat and set the currency on each expense. Reports note any amounts in other currencies that aren't included in a total. • Tap through the expense report to see what is behind each total, and assign a system to service that has none. • Unsent expenses and parts are kept on your phone and retry on their own when you're back online. • Connect a device: link a SignalK device from the new Integrations screen. Once one is connected, Sensors on your boat lets you review and confirm the readings it reports. • Sailboats: record rig type, rig fractionality and keel type on your boat. • Sizes and readings now points you to tank sizes, and equipment suggestions load reliably when you link an existing item. • Refreshed loading screens with the VesselTwin logo.
App privacy
The developer, Joao Lima, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
- Contact Info: Email Address, Name, Phone Number
- User Content: Photos or Videos, Other User Content
- Search History: Search History
- Identifiers: User ID, Device ID
Used for: Analytics, App Functionality
Alternatives to VesselTwin: Boat Maintenance
Looking for apps like VesselTwin: Boat Maintenance? Here are 6 similar apps on the App Store. The highest rated is QuarterMaster Yacht Inventory (5.0/5), and all 6 are free to download.
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QuarterMaster Yacht Inventory
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OMPHOBBY
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YACHTWAVE - Maintenance App
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EVScanner – Check your Battery
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OneControl Auto
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AutoPylot For Drones
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| VesselTwin: Boat Maintenance | – | Free | October 15, 2026 | |
| QuarterMaster Yacht Inventory | 5.0 / 5 (4) | Free | Jul 18, 2026 | Compare |
| OMPHOBBY | 5.0 / 5 (3) | Free | Aug 12, 2026 | Compare |
| YACHTWAVE - Maintenance App | 4.8 / 5 (165) | Free | Oct 8, 2026 | Compare |
| EVScanner – Check your Battery | 4.3 / 5 (105) | Free | Jan 9, 2026 | Compare |
| OneControl Auto | 2.7 / 5 (816) | Free | Sep 16, 2026 | Compare |
| AutoPylot For Drones | 4.9 / 5 (5,392) | Free | Oct 17, 2026 | Compare |