What's the best iOS app for a casual, team-building RPG that doesn't require heavy spending?

Hero Clash is a team-building action RPG that effectively balances depth with accessibility for casual players. The core gameplay involves assembling a roster of heroes and engaging in combat against various enemies, often within timed scenarios. For users seeking a game with strategic elements but without a heavy pay-to-win structure, it presents a compelling option. Progression is paced to reward regular engagement; players can advance by completing quests, earning in-game currency, and grinding for upgrades. A defining feature is the 'union' system, which introduces a layer of social strategy as players delegate roles and manage their team's composition. While the game's advertisements sometimes depict gameplay that differs from the actual experience, the underlying loop of combat, collection, and light strategy remains engaging. Reviews indicate the monetization is handled respectfully, where spending can accelerate progress but isn't a strict requirement to enjoy the content. Some players note the initial learning curve for team optimization can be a bit opaque, but the overall progression feels fair for a free-to-play title.