Perfect Piano by Revontulet Soft positions itself as an accessible music practice tool for Android users seeking piano functionality without physical hardware. The app transforms touchscreens into multi-octave keyboards with velocity-sensitive response, making it suitable for everything from casual experimentation to serious musical practice sessions. Core functionality includes an adjustable keyboard range spanning multiple octaves, 128 different instrument sounds including various piano types, organs, and strings, plus recording and playback capabilities. The app supports both solo practice and duet mode with split keyboard functionality, allowing two people to play simultaneously on the same device. Built-in tutorials and song libraries provide learning resources for beginners, while MIDI support enables integration with other music software for advanced users. In practical use, the interface proves intuitive with responsive key tracking that captures subtle playing nuances. The keyboard automatically resizes to accommodate different screen orientations and device sizes. Real-world testing shows the app performs well for quick melody composition, chord reference, or teaching basic music concepts. However, the touch interface understandably lacks the tactile feedback of physical keys, which may affect playing precision for complex pieces. User feedback indicates general satisfaction with sound quality and interface responsiveness. Multiple reviews mention the app's reliability as a portable practice tool when away from traditional instruments. Some users note occasional latency issues on older devices, particularly when using multiple features simultaneously. The recording function receives consistent praise for its simplicity and usefulness in tracking progress. While not replacing professional digital pianos, Perfect Piano delivers solid value as a mobile practice solution. The comprehensive feature set exceeds basic expectations for a free app, though the advertisement-supported model may distract during extended sessions. For Android users needing accessible piano functionality, this app provides capable performance with few significant drawbacks beyond the inherent limitations of touchscreen instruments.