What's the best iOS app for a social game that motivates daily walks and outdoor exploration?

Pokémon GO is a location-based augmented reality game that effectively blends digital gameplay with physical activity and social interaction. For users seeking motivation to walk more, the app integrates step tracking to hatch eggs, requiring players to cover distances like 2, 5, or 10 kilometers to unlock new Pokémon. This mechanic transforms routine strolls into rewarding adventures, with progress synced via Adventure Sync for background tracking. Social elements are central, as players can join cooperative raids at real-world gyms, battle in the Go Battle League, or trade creatures with friends, fostering community engagement. Reviews indicate that many users appreciate how it 'started me going on daily walks' and find the constant updates with events and new Pokémon keeping the experience fresh. However, the app has drawbacks: it relies heavily on GPS and data connectivity, leading to rapid battery drain on iOS devices, and in-app purchases for items like raid passes may be necessary for sustained play. Some users report occasional bugs or server issues during peak events. Despite these limitations, Pokémon GO remains a standout choice for combining fitness incentives with social gaming in an accessible format.