What are some alternatives?
When comparing Cloud Piano and Free Piano Online, you can also consider the following products
Piano Companion - Chord & scale dictionary with libraries, reverse mode, etc.
Simply Piano - Fast and fun way to learn piano
Touch Bar Piano - Play piano on the new MacBook Pro's Touch Bar 🎹
Touch Pianist - Play piano like a pro without playing piano.
Pianu - Learn to play the piano in your browser.
Piano Academy - Play your favorite songs