What's a good Guitar Hero-style game for Android with online battles?

Guitar Band is a competent entry for players seeking a Guitar Hero-style experience on Android that extends beyond solo play. The app's core appeal lies in its 'Rock Battle' online mode, where players can compete against others in real-time, providing a competitive hook that many similar mobile titles lack. For practice, the Solo Mode allows users to memorize note charts and improve their skills offline, which is crucial for tackling the game's challenging higher difficulty tiers. The progression system, which involves earning discs and skill points to upgrade band members and equipment, adds a layer of long-term engagement beyond simply playing songs. The song library consists of shortened covers of well-known rock tracks, though some user reviews indicate the quality of these covers can be inconsistent. A notable technical feature is an adjustable 'Sync Audio' setting in the menu, which addresses a common timing issue reported in rhythm games. However, the experience isn't without flaws. Some event-specific songs appear to be temporarily or permanently unavailable, frustrating completionists, and the end-game content can feel sparse after reaching the highest rank. Furthermore, while a one-time payment removes ads, the presence of a weekly subscription is noted negatively in feedback. For those wanting a competitive, progression-driven take on the classic formula, Guitar Band offers a solid, if occasionally imperfect, package.