RF4-STAT is an online companion resource for players of Russian Fishing 4, bringing together fishing-location information, community posts, catch records, and practical tools. Its interactive maps show reported spots, pits, depths, shallows, and banks, with options to explore locations and filter active bite information. The site covers a wide range of in-game waters, including lakes, rivers, and the Norwegian Sea, and organizes catch data by fish species, bait, and location.

Players can browse statistics and posts, share their catches, and submit fishing-spot details for review and inclusion in the database. RF4-STAT also provides a Fishing Tracker that reads fish names and weights from the game screen and displays catch value in real time. Additional resources include tackle and bait references, equipment and rig information, shop prices, experience and skill guides, quests, and calculators. According to the site, record-fish data is sourced from the official Russian Fishing 4 website and refreshed every ten minutes, while spot and post content is collected from open community sources and contributions made on RF4-STAT.