Sayline is a native macOS application designed to replace traditional keyboard typing with voice dictation capabilities. It enables users to speak naturally and have their words transcribed instantly into any text field across various applications, providing a more efficient way to create content and communicate.

The app features global hotkeys that allow users to activate dictation anywhere they type, including applications like Gmail, Slack, VS Code, Notes, and many others. It offers both standard and superhuman accuracy modes for transcription quality. Sayline works with numerous popular apps as demonstrated by the extensive logo gallery showing compatibility with Canva, Google One, Grammarly, ChatGPT, Obsidian, Claude, Microsoft Word, Gmail, Notion, Google Docs, Cursor, Linear, Microsoft 365, Outlook, LinkedIn, Todoist, Google, Slack, Zoom, Discord, WhatsApp, Telegram, and Superhuman.

Sayline operates entirely locally on the user's device, processing all voice dictation on-device without requiring an internet connection. The app uses NVIDIA Parakeet and MLX technology for its AI transcription capabilities, ensuring that all audio processing happens on the user's Mac hardware rather than being sent to cloud servers.

The primary benefit is significantly faster content creation, with claims of being 4x faster than manual typing. It allows users to create at the speed of thought without the limitations of keyboard input. The app provides uncompromised privacy since no voice data leaves the device, making it suitable for sensitive communications and confidential work.

Sayline targets Mac users who need to type frequently across multiple applications, particularly professionals using productivity tools like email clients, messaging platforms, document editors, and coding environments. The app integrates seamlessly with existing workflows through global hotkeys and works with virtually any application that accepts text input.