Gloomhaven Campaign Tracker (GCT) is a support app for the board game Gloomhaven. It allows players to keep track of game progress, manage multiple campaigns and characters, and track legacy aspects of the game. The app supports The Forgotten Circle, Jaws of the Lion, Crimson Scales, and Frosthaven campaigns.

With GCT, players can create a party for each campaign, manage parameters like reputation, price modifier, and location, and add or remove party achievements. They can also manage individual players, choose from a base class list or any unlocked class, save experience, gold, and notes, and track player personal quests and used ability cards.

The app includes a map feature to track progress in the world, a legacy feature to help track changes in legacy aspects of the game, and a combat area to organize fights, track monster HP and conditions, and draw random Loot cards. GCT does not collect or save any user data and offers in-app purchases for tips to the developer and multi-device server sync.