Out of 250+ marco ocean maps apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
Access and explore thousands of ocean resource maps with detailed layer information. Customize your map view, search for specific data, and save your favorite layers for quick access. This mobile version mirrors the functionality of a desktop GIS web application.
Navigate waterways with detailed marine charts and GPS. Features include route planning, voice-guided navigation, tide and current predictions, and track recording. Offers extensive map coverage for various regions and inland rivers.
What We Love
🚀 Accurate GPS and navigation
🗺️ Detailed nautical charts
📊 Helpful fishing and structure information
🔍 Useful for finding unexplored fishing spots
Room to Improve
🌐 GPS/location issues, inaccurate positioning
💰 Expensive recurring subscription model
🔁 Difficulty restoring purchased content on new devices
What are the best marco ocean maps apps for iPhone?
MARCO Ocean Data tops our marco ocean maps apps ranking as of August 2026, with a 5.0-star average from 8 App Store ratings, and it's free to download.
Are there free marco ocean maps apps for iPhone?
Yes — 20 of the top marco ocean maps apps we rank are free to download, including MARCO Ocean Data and i-Boating: Marine Charts & Gps.
Does MARCO Ocean Data have ads or in-app purchases?
MARCO Ocean Data has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
How many marco ocean maps apps are on the App Store?
We track 250+ marco ocean maps apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
What is MARCO Ocean Maps?
MARCO Ocean Maps is a mobile application that provides access to over 5,000 maps of ocean resources, serving as a mobile-friendly version of the Mid-Atlantic Ocean Data Portal’s Marine Planner GIS web app.
What kind of data can I find in MARCO Ocean Maps?
The app offers a wide range of ocean resource data, including layers related to marine ecosystems, human activities, and environmental conditions. Users can explore these layers by theme or search.