A speaking coach that runs on your computer.

Practice a new language out loud with on-device speech recognition and a private AI coach. No cloud, no accounts required — your voice and conversations never leave your machine.

Platforms

Versions

Supported macOS builds (.dmg), newest first. Earlier releases are retired and prompt to update to the latest on launch.

• v1.1.1Latest2026-06-16

  • Now connected to the new home at undo.tech.
  • Faster spoken replies — the coach starts talking sooner.
  • The phone companion now matches the desktop coach: shared memory across the conversation, your tuned personality, and the language you're practicing.
  • Reliability improvements.
  • Sign in with Google to keep your account across updates and devices.
  • Messages from the developer, with optional star/text feedback.
  • Updated Core Operating Protocols — please review them on first launch.
  • More reliable startup and backend connection handling.
  • Privacy: only basic, non-content usage analytics are shared — your conversations and audio never leave your device.
  • Major release with Hybrid AI architecture.
  • Implemented safety protocols and guidelines modal.

  macOS
• v1.1.0

  macOS