Swarm

Swarm is a mobile application that enables users to log and remember the places they visit through a check-in system. It allows users to track their personal travel history, earn stickers, and share their location with friends, fostering a sense of personal lifelogging and social connection around visited places.

Swarm is a lifelogging app that allows users to check in to places they visit, which aligns with the 'location-based-quests' feature. It also mentions earning 'fun Stickers' and 'helpful insights' as users check in more, and competing with friends based on places they go, which loosely relates to a 'leaderboard-rewards-system' although it's not as explicit as the concept's description. However, it lacks themed campaigns or interactive map navigation for quests, focusing more on personal history and social sharing rather than guided adventure quests.