ModulSea

Navigation & Boat management

Only for Mac

Free · In‑App Purchases

Mac

ModulSea is a complete marine navigation application designed for sailors, skippers, and yachting professionals. It provides a unified environment to manage voyages, vessels, charters, and maintenance operations — all in a clean and fluid interface. ModulSea never uploads or shares your data. All your navigation data stays on your device. FREE FEATURES • Real-time navigation with live position, routes, zones, and waypoints on the map • Automatic session recording with distances, bearings, and speeds • Boat document management with expiry date tracking • NMEA instrument connection via TCP (speed, heading, wind, depth) • Official S-57 and S-63 nautical chart import (.000) with commercial chart decryption • Dedicated permit manager supporting multiple distributors • 100% Metal-based chart rendering with full professional layer access • Modular and customizable interface • On-device storage, no tracking MODULSEA PRO Unlock the full potential with a Pro subscription: • Charter management with itineraries, ports of call, and meal planning • Charter and boat finance dashboards with interactive charts • Crew management: contracts, leaves, certificates, and salary tracking • Fuel tracking with taxed/untaxed fuel management • Navigation history with filtering and professional exports • Route planning with distance, ETA, and fuel estimates • Export to PDF, GPX, PNG, and CSV formats • Logbook events SUBSCRIPTION INFORMATION • ModulSea Pro Monthly: $14.99/month • ModulSea Pro Annual: $149.99/year • 14-day free trial included with both plans • Payment is charged to your Apple ID account at confirmation of purchase • Subscription automatically renews unless canceled at least 24 hours before the end of the current period • Your account is charged for renewal within 24 hours prior to the end of the current period • You can manage and cancel your subscriptions in your Apple ID account settings • Any unused portion of a free trial period is forfeited when purchasing a subscription Privacy Policy: https://verify.worldseas.app/modulsea/ Terms of Use: https://verify.worldseas.app/modulsea-terms/ IMPORTANT NOTICE ModulSea displays official S-57 and S-63 charts using its own Metal-based rendering engine, with Apple MapKit as the worldwide base map. Imported nautical charts provide detailed marine cartography but must not be used as a sole primary navigation aid. Always rely on certified instruments for safe navigation at sea. Built by passionate sailors. Whether you own a sailboat, work as a skipper, or manage a fleet — ModulSea is your all-in-one navigation companion.

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A new Friendly chart style, chart checks for inspections, a redesigned Nautical Charts window and a smoother navigation map. NEW "FRIENDLY" CHART STYLE - Completely redrawn chart: soft colours, water shaded in blues by depth, sand-coloured land, highlighted shallows and rounded, easy-to-read text. - Modern, realistic icons: cardinal and lateral buoys, beacon towers on their rocks, lighthouses, lights, wrecks, rocks and obstructions. - Light sectors drawn as thick, coloured arcs. - Easier to read when zoomed out: overlapping secondary icons fade away, lights together with their sectors and characteristics; hazards are always shown. - Adjustable icon size (Preferences › Nautical Charts, or the map's Layers panel); the selection halo surrounds the chosen icon. - Choose the style in Preferences › Nautical Charts › Visual style. ECDIS mode is unchanged; spot heights are now shown in brown. CHART CHECKS - Show all my charts: every chart's outline appears on the navigation map with its code, in green (up to date), orange (to check) or red (problem). Click any chart flagged for review to display it with its details. - Double-click a chart to draw its outline in yellow, above all layers, with its check card: edition, latest update, licence and expiry date. - Export list (PDF): your charts with edition, update, licence, expiry date and status, in a document ready to hand to an inspector. NAUTICAL CHARTS WINDOW - Three tabs: My charts, Licences and Help, with a step-by-step guide to get started. Larger window. - A single "Add charts…" button, or drag and drop: zip files, folders, .000 files, updates and PERMIT.TXT licence files, imported automatically when they come with the charts. - Progress with a Stop button and a detailed import report. - Charts grouped by use (harbours, approaches, coastal…), search, show or hide a whole group. - Licence shown for each chart: distributor, expiry date, warning before expiry and a Renew link. - Licences tab: this Mac's identifier (User Permit) ready to copy, licences by distributor and history. - Direct access from the Management menu (⌘⇧K). CHART AND UPDATE IMPORT - Updates checked one by one: a missing update is reported; a chart cancelled by its producer is hidden and reported. - Multi-volume exchange sets and several zip files at once. - A chart replaced by a new edition keeps its name and visibility. - S-63 licences verified for this Mac, expiry dates taken into account, clearer error messages. - Faster, safer import; protected charts are never kept decrypted on disk. SAFETY ALARMS - Click an alert in the banner: the object involved (restricted area, hazard, cable…) is framed and highlighted, and its details open. - Alarms stay active even when a layer is hidden. NAVIGATION MAP - Chart layers stay perfectly aligned with the satellite background while zooming, with no jitter. - Faster opening, smoother and more energy-efficient display. - "Hide" button in an object's details to hide its layer, with Undo. - The selected object stays highlighted, even after zooming or panning. - The boat, AIS targets, routes and your own items stay visible when charts are hidden. New: marine weather on the chart. - Download forecasts for your area: a square around the boat or an area drawn right on the chart. - Choose the model and its grid: AROME down to 1.3 km (France, 48 h), ARPEGE 10 km (Europe, 4 days) or ECMWF 25 km (worldwide, 10 days). - The forecast on screen updates automatically as soon as a new one is published. - Import your own GRIB files (GRIB1 and GRIB2). - Wind, gusts, waves, swell, rain, pressure and current in colour, animated wind and sea, isobars. - Timeline, information bubble on hover and values at the boat's position. - Chart: scale bar in nautical miles, cursor position and position search. Forecasts: Météo-France and ECMWF. They do not replace official marine weather bulletins.

The developer, Julien Boulard, 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.

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

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    BOULARD JULIEN
    Size
    20.7 MB
    Category
    Navigation
    Compatibility
    Requires macOS 15.0 or later.
    • Mac
      Requires macOS 15.0 or later.
    Languages
    English and 3 more
    • English, French, Portuguese, Spanish
    Age Rating
    4+
    In-App Purchases
    Yes
    • ModulSea Pro — Annual $129.99
    • ModulSea Pro — Monthly $12.99
    Copyright
    © 2026 WorldSeas Inc