250+ iOS apps curated and reviewed
The best open sea openseamap browser apps on iPhone average 3.8★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.2★ (5) | No | No | May 2026 |
| 2 |  | Free was $0.99 | 1.0★ (1) | No | Yes | Aug 2026 |
| 3 |  | Free | 4.7★ (2.8K) | No | No | Aug 2026 |
| 4 |  | Free | — | No | Yes | Aug 2026 |
| 5 |  | Free | 4.8★ (19) | No | No | Aug 2026 |
| 6 |  | Free | 4.6★ (37K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.1★ (51) | Yes | No | Aug 2026 |
| 8 |  | Free | — | No | No | Jul 2026 |
This app provides access to nautical chart data and map image tiles generated by a collaborative open-source mapping project. It serves as a browser for freely usable marine navigation information.
This app provides a free, worldwide nautical chart with detailed sea information, including lights, weather data, and harbor details. It offers chartplotting, waypoint management, and offline map caching for navigation. Users can mark locations, enter coordinates, and adjust chart zoom for optimal viewing.
Navigate and explore with detailed offline maps and GPS guidance. Plan, record, and import routes for travel, hikes, and rides without needing an internet connection. Enjoy privacy-first, battery-efficient navigation with extensive points of interest.
This app offers a smart social mapping solution using OpenStreetMap data. It allows users to manage favorite locations, share them with friends, and access maps offline. Plan trips or simply remember great spots with this versatile navigation tool.
Navigate your city with detailed maps, real-time traffic, and multi-modal routing. Find businesses, get directions by car, public transport, bike, or foot, and access offline maps for over 2000 cities.
Explore detailed maps of the world, including transport networks, hiking trails, and topography. This app leverages OpenStreetMap and other specialized map layers for comprehensive navigation and outdoor adventure planning. Enjoy offline caching for uninterrupted exploration.
View OSM maps from various sources, create notes, and add multimedia like photos, audio, and video. Record and manage routes and tracks in GPX format, with iCloud synchronization and desktop backup options.
Access detailed, open-source topographic maps for all your outdoor adventures. Plan hikes, discover trails, and navigate with confidence using community-driven data from OpenStreetMap.
Navigate your world with a free, open-source mapping application focused on privacy and offline functionality. Discover detailed maps, plan trips without cellular service, and enjoy essential navigation features. It's community-built and respects your data.
This free navigation app offers a wide range of map layers for land and sea, including topographic and nautical charts. It provides advanced features like offline map data, waypoint management, and vessel tracking. An optional subscription unlocks additional map layers and extended functionality.
Explore diverse map layers including satellite, topographic, nautical charts, and street views. Compare multiple map sources side-by-side for comprehensive geographic information.
Visualize detailed underwater terrain with high-resolution bathymetric charts. Gain deeper insights into seafloor structure, contours, and terrain for offshore activities. Includes optional data overlays and waypoint management for enhanced situational awareness.
This app offers a one-time purchase offline GPS chartplotter, giving you lifetime ownership of your maps without subscriptions or data tracking. It provides reliable navigation for sailors and fishermen, with an optional PRO subscription for advanced features.
Navigate anywhere with offline maps and GPS. Access a vast library of global maps, plan routes, and track your journey without a mobile data connection. Sync data across devices for seamless planning and navigation.
Access NOAA nautical charts for free on your mobile devices. View charts online and download single areas for offline use. Additional features like multiple offline downloads and custom boundaries require a purchase.
Display your custom location-based data, GIS, or CAD information on industry-standard maps. This affordable and fast solution allows you to query, analyze, and visualize your data with various map layers and tools.
This app provides professional marine navigation with official ENC charts and real-time weather data. It offers advanced instrument displays, alerts for restricted areas and fishing closures, and route planning capabilities for safe and informed voyages.
Track ships and monitor maritime traffic globally in real-time. Access detailed vessel information, movement history, and predicted routes. Ideal for maritime professionals and enthusiasts alike.
Access and control map data with this application. Download vector tiles in MBTiles format for offline use and integrate them into your own app development projects. Customize map styles and host them on your servers.