On-device text-to-speech for Windows and macOS, with optional Twitch integration: chat messages, channel-point redemptions, cheers, subscriptions and follows can be read aloud on stream.
Download for Windows Download for macOS
macOS: the app isn’t notarized yet, so Gatekeeper blocks it on first launch.
Right-click the downloaded Kaiku Installer.pkg and choose Open (once), then
proceed — or run xattr -dr com.apple.quarantine ~/Downloads/Kaiku*.pkg.
Installs and updates itself; the voice model downloads on first run. This service is also the Twitch connection relay — the desktop app is where you connect your account.