The flowkey Classic app is currently available with a five-year subscription for $79.99, a significant discount from its usual price of $899. This offer aims to provide an accessible alternative to traditional piano lessons, which can range from $40 to $100 per hour.

The app functions by listening to a user's playing through a device's microphone and offering real-time feedback on note accuracy. It guides users through various stages of learning, from basic scales to complex song arrangements.

flowkey Classic features a library of over 1,000 classical and public-domain songs by composers such as Bach, Chopin, Beethoven, and Mozart. The arrangements are designed for a range of skill levels, from beginner to advanced. Key features include a "Wait Mode" that pauses the song until the correct note is played, slow-motion playback, and a loop function for practicing difficult sections. Users can also practice their left and right-hand techniques independently. In addition to song-specific tutorials, the app offers courses on music theory, chord mastery, and sheet music reading.

The application is compatible with laptops, phones, and tablets, with progress syncing across devices. It is available in 11 languages. To date, over 5 million individuals have used flowkey, and it holds a 4.7 out of 5 rating on the App Store and a 4.5 out of 5 rating on Google Play.

This five-year subscription plan allows users extended time to develop their piano skills without the commitment and scheduling constraints often associated with in-person lessons. The program is designed to make learning piano more convenient and affordable, eliminating the need to schedule with a teacher or pay on an hourly basis.