What's the best iOS app for practicing piano basics without owning a real piano?

Piano for iPhone is a strong candidate for users seeking a no-cost, low-commitment way to start learning piano fundamentals directly on their phone. The app's primary strength is its accessibility; it turns an iPhone into a functional practice instrument, eliminating the need for expensive hardware. Key features include a multi-octave touch keyboard that responds to finger placement, a built-in recording function that lets users capture and review their progress, and support for playing popular songs, which helps maintain engagement. For someone in a small apartment or a student on a budget, this app provides a legitimate avenue to grasp scales, chords, and simple melodies. While the sound quality and touch sensitivity are naturally limited by the phone's hardware and speakers, reviews indicate most users find the simulation sufficient for foundational practice. Some users note the interface is functional rather than flashy, and the ad-supported free model can present minor interruptions. However, for the specific goal of casual, on-the-go practice, its portability and core feature set are difficult to match. It serves well as a first step before investing in dedicated equipment.