What's the best Android app for learning piano basics without owning a real piano?

Perfect Piano is particularly well-suited for beginners wanting to learn piano fundamentals without physical instrument access. The app's responsive touch keyboard supports multi-touch input, allowing users to play chords and complex arrangements naturally. Its learning modes include guided lessons that highlight which keys to press, along with a library of popular songs to practice. The app offers multiple keyboard sizes and instrument sounds, from grand piano to electric keyboard tones, accommodating different learning preferences. For real-world practice scenarios, users can connect a MIDI keyboard via USB-OTG for more authentic playing experience. Reviews indicate the recording feature helps track progress over time, though some users note occasional audio latency issues on older Android devices. The app's metronome and tempo adjustment tools support rhythm development, while the dual keyboard mode enables duet playing for collaborative learning. While not replacing formal instruction for advanced techniques, it provides solid foundational practice with immediate feedback on accuracy.