RF4·Map is an unofficial community website for players of Russian Fishing 4, bringing together practical fishing information, tools, news, and player content. Its central feature is a regularly updated map of reported fishing spots, with details such as water body, fish species, coordinates, depth, clip distance, and angler comments. Players can browse recent catches and records, including weekly records by water body with fish, weight, bait, and player information.

The site also offers calculators for estimating reel drag and mechanism wear and comparing reel speeds, plus a tool to help determine how far to throw groundbait. Registered users can keep private notes on spots, bait, and fishing observations, and receive notifications about newly shared locations. Guides and tables support newcomers, while videos, news, and community channels provide updates and entertainment. Players can also request a livestream focused on catching a particular fish. Overall, RF4·Map serves as a practical reference and social hub for the Russian Fishing 4 community; it states that it is not officially affiliated with the game.