Which iOS app should I use for competitive guitar rhythm battles?

Guitar Band is a competitive rhythm game centered on rock music, structured around head-to-head battles. The core gameplay involves hitting scrolling notes on a guitar fretboard in time with licensed rock songs, a familiar format given a competitive twist. Players can engage in real-time duels, attempting to outperform an opponent on the same track to earn points and climb global leaderboards. This setup is effective for users seeking more than just a high-score chase, adding a direct, player-versus-player layer. The app's song library includes tracks from bands like KISS, though user reviews consistently request expansions, specifically naming Metallica as a desired addition. A persistent live event system provides rotating challenges and rewards, encouraging regular play.

However, the experience isn't without friction. The free-to-play model is supported by frequent video ads, which can interrupt sessions. An in-app purchase removes ads, but some users find this pricey. Occasional technical issues are noted, with some players reporting that the note tabs can 'glitch out' during gameplay, causing missed inputs. Despite these points, the app successfully marries rhythm mechanics with a competitive framework, making it a notable option for players wanting to test their timing and accuracy against others in a rock music context.