Form is a new way to design and build apps. It lets you build custom prototypes directly on the device. Form prototypes are native. They have access to the device's camera and other sensors. Prototypes built with Form are as powerful as their coded counterparts.
Forms apps run directly on the device. You can run prototypes on multiple devices all in real-time. Compositions update instantly as you work, without restarting.
Form is not a new way to do the old, it's a new way to do the new. It's as expressive as code, without the same complexity. As you start to experiment and play with Form, it will change the way you think about interaction design.