crystal vs Pianu

Crystal is the AI based advisor which makes data literally talk.

Crystal is a powerful Artificial Intelligence based advisor. It gets to the heart of your digital actions and interactions, turning them into actionable advice for better marketing and business decisions. Machine Learning makes crystal smarter by the hour, while a Natural Language Processing system allows it to literally talk to you, so you can stop searching for answers and just ask for them.

Pianu is a new way to learn and play the piano.

Pianu features a fully interactive keyboard you can play in your browser, with pre-loaded songs and lessons. There's no software to download or install. Pianu connects to any musical keyboard, so you can start learning and playing on a real piano. Simply plug your keyboard into a usb port on your computer, and Pianu will respond interactively. You can also tap the keys using your tablet or phone.