Thalassa for Windows and macOS

* Sound. On Windows there is nothing else to install — Windows hands the other party’s audio to the app on its own. On macOS 14.2 and newer the same is true. Below that, the app sets up BlackHole, a free audio device; the first launch walks you through it in about three minutes.

** What the computer asks on first launch. On a Mac you are asked twice: whether the app may use the microphone, and whether it may listen in on what is said in the call. Both have to be allowed once, otherwise the app hears nothing. On Windows nothing is asked — microphone access is on unless you switched it off yourself.

Hidden in a shared window. Zoom, Teams, Meet, OBS — the assistant stays out of the recording.

When you share a single window or application, the assistant window is excluded from the capture on both systems. That is the case the product is built for: you share your slides or your browser, and the window you read from is not in the stream.

On Windows the assistant stays out of the recording even when you share the entire screen. On macOS 15.4 and newer, Apple removed the interface that made that possible, so it can appear. Two ways round it, and the app suggests both when they apply: move the assistant to a second display you are not sharing, or share a single window instead of the whole screen. We would rather name this than let you discover it in a client call.

Your documents stay on your machine. Read, indexed and searched locally — with one named exception.

Knowledge base, preparation, playbooks, account and billing all work the same on both systems. Your documents are read, indexed and searched on your device. One named exception: a scanned PDF has each page sent to the backend once, for text recognition, and that can be switched off.

Eight languages in the interface, sixteen in the answers. The interface language and the language you work in are two settings.

The interface comes in eight languages. Answers and live translation cover sixteen — you can run the interface in German and hold the conversation in English without changing anything else. A mobile version for iOS and Android is in preparation.

Before you click: the five questions that come up at this point.

Which Mac do I have? Apple menu > “About This Mac”. If it says “Apple M1”, “M2”, “M3” or newer, take the Apple Silicon build. If it says “Intel”, take the Intel build. The browser cannot tell reliably, which is why both stand there.

The button says the release is not available yet. Then the release manifest could not be reached. The page never hides the buttons because of a network error — reload once, and if it stays that way, write to support@thalassa-consulting.com.

Do I need an account before I download? No. You download first and sign in on first launch. The trial starts there, not here.

How do updates work? The app checks for a newer build and tells you; you download and replace it. There is no silent background updater — on a machine that sits in client conversations, we would rather you decide when something changes.

How do I remove it again? Windows: uninstall like any other application. macOS: drag the app to the trash. Your knowledge base lives in your user folder and is deleted with the app data; deleting the account is a separate step in the settings.

Install it, point it at your own documents, and run one conversation with it.