Everything you need to get started with both SpeakFlow apps.
Real-time conversation translation. You provide a free Google API key; activation unlocks the app.
Go to aistudio.google.com/app/apikey and sign in with your Google account.
Click "Create API key" → choose a project (or let Google create one). A key appears, starting with AIza…
Click the copy icon. Keep it private — it's like a password. (Free tier needs no card; paid tier = higher limits, billed by Google.)
Download the .dmg, open it, and drag SpeakFlow Live to Applications.
Open the app → it asks for your license key (from your purchase) → paste SFL-XXXX-XXXX-XXXX → Activate. Works on up to 2 Macs.
Menu → Set API key → paste your AIza… key. Pick your languages, choose a mode (Listen / Speak / Both), press Start — and talk!
From the menu-bar icon pick Listen (hear others in your language), Speak (they hear you in theirs), or Both (full two-way conversation). Set My language and Their language in the menu.
Set the mode to Listen and press Start. SpeakFlow captures your Mac's audio (a call, video, meeting) and reads it aloud in your language, with on-screen captions. Tip: use the Mute original option so you only hear the translation.
Set mode to Speak, then in your call app (Zoom, Google Meet, Zalo, Teams…) open audio settings and choose "SpeakFlow" as the microphone. Now when you talk, the other side hears your translated voice. Pick your real mic under Mic in the SpeakFlow menu.
Highlight any text in any app and press ⌘⇧D — SpeakFlow instantly shows the translation and reads it aloud. Works without starting a session.
Captions appear on screen as people speak. Turn on Save session to record the transcript and get an AI summary when you stop. Dictate mode types what you say (in your language) into the focused field — handy for chat.
In the menu, choose your speaker (Output), microphone (Mic) and the SpeakFlow virtual mic (Virtual). You can also switch the app's interface language at the bottom of the menu.
Translate & dub YouTube videos. Free to use; VIP unlocks premium AI models.
Install SpeakFlow Translate from the Chrome Web Store (Chrome / Edge / Brave on desktop).
SpeakFlow adds a floating play button on the page (and a player button). Click it to start translating & dubbing.
Open the extension popup → choose target language, voice, and translation engine. Use the SRT button to export subtitles or get an AI summary.
For premium AI models (Gemini, DeepSeek, GPT, Claude), premium voices and AI summary: popup → ⭐ VIP (or your account page) → sign in → pay with PayPal or card.