Local speech.
A clear internet boundary.

What stays on the Mac

Bulong runs a downloaded speech model on your Mac. Audio and transcript text are not needed by the entitlement service. Saved transcript history is local and can be cleared in the app.

What needs the internet

The initial model download, subscription activation, periodic access verification, and optional update checks need an internet connection. The subscription is not an unlimited offline lifetime license.

Model and download hosts also see normal request metadata. That is different from uploading your recordings. Read the privacy explanation for the full boundary.

Try offline before relying on it

Once the model and your access are ready, disconnect deliberately and try a non-sensitive phrase. Confirm the model runs, the text is recoverable, and the apps you need accept it. Public-release verification is still pending, so we do not claim a completed network audit.

Try it when the Mac release is ready.

14-day trial. No card required. Public downloads are not open yet.