Sayline is a native macOS dictation app in 2026 that replaces typing with lightning-fast, on-device AI voice input across any app (Slack, Gmail, VS Code, etc.). Fully offline, private (no cloud, no data storage/training), superhuman accuracy, global hotkeys trigger, unlimited use, plus grammar fixes, translation, formatting—all local via NVIDIA Parakeet + MLX. One-time lifetime purchase (no subs), 4x faster than typing—ideal for heavy typists, writers, devs, remote workers craving speed without privacy risks.