Willow is an artificial intelligence dictation keyboard designed for people who spend their day working with email, chat, and documents. Instead of typing, you tap the microphone, speak once, and get polished text ready to send. It is used as a daily writing assistant: it converts voice into clear text in Mail, Slack, Messages, and Notes; drafts long replies, documents, and threads without touching the keyboard; captures ideas as quick notes and expands them later with AI; and improves tone, grammar, and length with rewriting suggestions.