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Langless use cases

Where and how to use live voice translation — at work, while studying, talking, gaming or traveling.

What you need

  • An AI key (OpenAI or Gemini) — it does the translating. How to get the key
  • The 1-day free trial (Listen and hosting a Room) or a plan (from US$ 25/month). Only Meeting is paid.
  • Headphones. Without them, the app hears its own translation and echoes.

Languages

Pick "My language" and "Other language" in the top bar. In Listen, the "🌐 Translates to … ⇄" button shows which of the two the translation goes to; tap it to switch (it works even while translating, and the app remembers your choice). It starts translating into the Other language — to hear in your own language (video, class, TV, someone speaking another language), tap until it shows yours.

How the styles work

  • Continuous: translates nonstop, hands-free.
  • Push-to-Talk: the microphone only listens while you hold the button. Good in noisy places.
  • Consecutive: the translation is saved. Tap "⏸ Pause capture", hear it with "📥 Play translation" (and compare with "📤 Play original"), then "🎤 Resume capture" — that erases the previous chunk.

Work and career

Rehearse a job interview in English

Where
Computer or phone
Mode
Listen
Source
Microphone
Style
Consecutive
Access
Free trial or plan + AI key
You need
headphones
  1. Set English as "Other language"; in Listen, pick Microphone and leave it on "🌐 Translates to English".
  2. Say your answer and tap "⏸ Pause capture".
  3. Hear it with "📥 Play translation" and compare with "📤 Play original". Repeat it out loud.

Limit: It is for practice and vocabulary — the voice you hear is the AI’s.

Do a job interview with a company abroad

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Meeting
Source
Microphone (your voice) + the meeting: "Meeting tab" in the browser, or "Input/cable" in the installed app
Style
Continuous
Access
Paid plan + AI key
You need
headphones, virtual audio cable
  1. Install the virtual audio cable (once). Simplest: join the meeting in the browser (Meet, Zoom or Teams on the web) → 1 cable (free). With the installed Zoom/Teams app (outside the browser) you need 2 cables, required to hear the meeting translated — more setup; on Windows, the VB-CABLE A+B pair is a donation starting at €5; on Mac, BlackHole (free), always in Chrome.
  2. In Meeting, set up both lines: "When I speak" (your microphone → "meeting hears" = the cable) and "When I hear the meeting" (the meeting tab, or the 2nd cable in the installed app → "I hear" = your headphones). Tap ▶ Start meeting.
  3. In Zoom/Teams/Meet, pick the cable as the microphone.

Limit: The interviewer hears the AI’s voice, a few seconds late, instead of yours. Say at the start that you use a voice translator — it explains the voice and the delay, and avoids trouble if the company finds out later. In Meeting the AI cost is ~2× (two translations at once).

Full step-by-step: How to translate a Zoom meeting in real time · Virtual audio cable: what it is and how to translate any meeting · How to install VB-CABLE on Windows (step by step) · How to install BlackHole on Mac

Call with a client abroad (freelance)

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Meeting
Source
Microphone (your voice) + the meeting: "Meeting tab" in the browser, or "Input/cable" in the installed app
Style
Continuous
Access
Paid plan + AI key
You need
headphones, virtual audio cable
  1. Set it up like the interview: virtual cable and both Meeting lines.
  2. Agree with the client, at the start, that the call goes through translation.

Limit: A few seconds of delay: speak in full sentences and let the translation finish. AI cost ~2×.

Full step-by-step: Live translation for freelancers and consultants serving clients abroad

Meeting on Zoom, Teams or Meet (preferably in the browser)

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Meeting
Source
Microphone (your voice) + the meeting: "Meeting tab" in the browser, or "Input/cable" in the installed app
Style
Continuous
Access
Paid plan + AI key
You need
headphones, virtual audio cable
  1. Your translated voice goes into the meeting through the cable, as a microphone.
  2. The meeting reaches you translated in your headphones through the browser tab — that is why 1 cable is enough in the browser.

Limit: A few seconds of delay; with the meeting tab, the original audio plays along. With the installed Zoom/Teams app (outside the browser) you need a 2nd cable and more setup. On Mac, use BlackHole, in Chrome. AI cost ~2×.

Full step-by-step: Virtual audio cable: what it is and how to translate any meeting · How to install VB-CABLE on Windows (step by step) · How to install BlackHole on Mac · How to translate a Microsoft Teams meeting in real time · How to translate a Google Meet meeting in real time

Content creation

Record a video or portfolio in another language

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Microphone
Style
Continuous
Access
Free trial or plan + AI key
You need
virtual audio cable, recording/streaming software (e.g. OBS)
  1. Set the video’s language as "Other language"; in Listen, Microphone, set "🌐 Translates to" to that language.
  2. Send the Langless output to the virtual cable.
  3. In OBS, use the cable as the audio source and record.

Limit: The recorded voice is the AI’s voice, not yours, a few seconds behind the picture.

Full step-by-step: Virtual audio cable: what it is and how to translate any meeting

Stream live to an audience in another country

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Microphone
Style
Continuous
Access
Free trial or plan + AI key
You need
virtual audio cable, recording/streaming software (e.g. OBS)
  1. Set it up like the video recording (Microphone → virtual cable → OBS).
  2. In OBS, stream instead of recording (Twitch, YouTube…).

Limit: AI voice, with delay. The translation has to be restarted every 3 h and stops by itself after 15 min without audio.

Full step-by-step: Virtual audio cable: what it is and how to translate any meeting

Stream a talk in another language

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Microphone
Style
Continuous
Access
Free trial or plan + AI key
You need
virtual audio cable, recording/streaming software (e.g. OBS)
  1. Set it up like the video recording (Microphone → virtual cable).
  2. Use the cable as the audio in OBS or on the event platform: the audience hears the translation instead of your voice.

Limit: AI voice, with delay; restart every 3 h.

Full step-by-step: Virtual audio cable: what it is and how to translate any meeting

Studying

Watch a class or course from abroad

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Tab / System
Style
Continuous
Access
Free trial or plan + AI key
You need
headphones
  1. Open the class in a tab (YouTube, Coursera…).
  2. In Listen, pick "Tab / System", set "🌐 Translates to" to your language and press ▶.
  3. In the browser window, pick the tab and check "Share audio".

Limit: A few seconds of delay; the original sound keeps playing along (like a voice-over), it is not dubbing.

Learn a language with videos

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Tab / System
Style
Consecutive
Access
Free trial or plan + AI key
You need
headphones
  1. Set "🌐 Translates to" to your language. Let a bit of the video play, pause the video and tap "⏸ Pause capture".
  2. Hear it with "📥 Play translation" and compare with "📤 Play original"; repeat it out loud.
  3. Want to keep it? Download it (⬇) before moving on.
  4. Tap "🎤 Resume capture" and play the next bit.

Limit: Resuming capture erases the previous chunk; the recording stays only on your device.

Full step-by-step: Simultaneous vs. consecutive translation: differences and when to use each

Translate just the part of a video you didn’t get

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Tab / System
Style
Push-to-Talk
Access
Free trial or plan + AI key
You need
headphones
  1. Open the video in a tab. In Listen, pick "Tab / System", the Push-to-Talk style, and set "🌐 Translates to" to your language.
  2. The 1st press only starts it: in the browser window, pick the tab and check "Share audio".
  3. Rewind the video, hold the button during the hard part and let go.

Limit: We haven’t tested this combination yet. If it doesn’t work, use Consecutive, as in the card about learning a language with videos.

Read a book in another language and hear the translation

Where
Computer or phone
Mode
Listen
Source
Microphone
Style
Push-to-Talk
Access
Free trial or plan + AI key
You need
headphones
  1. With the book in the other language, set "🌐 Translates to" to your language.
  2. Read a passage out loud while holding the button and hear the translation.
  3. To practice the other way around, read a book in your language with "🌐 Translates to" set to the other language.

Limit: It depends on your pronunciation; with OpenAI there are 13 output languages (Gemini has more).

In-person class while studying abroad

Where
Phone
Mode
Listen
Source
Microphone
Style
Continuous
Access
Free trial or plan + AI key
You need
headphones
  1. Set "🌐 Translates to" to your language and keep the phone close to the speaker.
  2. In Continuous you hear it right away; in Consecutive, use "⏸ Pause capture" and "📥 Play translation" when you want to listen.

Limit: A big, noisy room makes pickup worse; it stops by itself after 15 min without audio.

Talking

Room: up to 8 people, each in their own language

Where
Computer or phone
Mode
Room
Source
Microphone
Style
Push-to-Talk
Access
Host: free trial or plan + AI key · guests free
You need
headphones
  1. The host creates the room at app.langless.com, with a code and a password.
  2. Guests join through the Langless Rooms app (Android) or the browser — free, no account.
  3. Everyone picks their language in "My language" (they speak and hear in it) and holds 🎙 to talk, or turns on "Detect speech automatically".

Limit: The host counts toward the total, pays everyone’s AI minutes and has to stay in the room (without them, it closes within a few minutes); holding to talk lasts up to 30 s at a time.

Full step-by-step: Multilingual chat room: everyone speaks their own language

Talk with family and friends in another country

Where
Computer or phone
Mode
Room
Source
Microphone
Style
Push-to-Talk
Access
Host: free trial or plan + AI key · guests free
You need
headphones
  1. Create a room and send the code and the password.
  2. Everyone speaks and hears in their own language.

Limit: Voice only, no video; whoever created it pays everyone’s minutes and has to be in the room.

Full step-by-step: Multilingual chat room: everyone speaks their own language

WhatsApp call on your computer, each person in their own language

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Meeting
Source
Microphone (your voice) + the meeting: "Meeting tab" in the browser, or "Input/cable" in the installed app
Style
Continuous
Access
Paid plan + AI key
You need
headphones, two virtual audio cables
  1. WhatsApp Desktop is an installed app: you need 2 virtual cables (on Windows, the VB-CABLE A+B pair; on Mac, BlackHole, always in Chrome).
  2. In Meeting: "When I speak" (your microphone → "meeting hears" = the 1st cable) and "When I hear the meeting" ("Input/cable" = the 2nd cable → "I hear" = your headphones).
  3. In WhatsApp’s audio settings, pick the 1st cable as the microphone and the 2nd as the speaker. Then tap ▶ Start meeting.

Limit: The other person hears the AI’s voice, a few seconds late: tell them at the start. AI cost ~2× (two translations at once).

Full step-by-step: Virtual audio cable: what it is and how to translate any meeting · How to install VB-CABLE on Windows (step by step) · How to install BlackHole on Mac

Talk face to face with one phone and shared earbuds

Where
Phone
Mode
Listen
Source
Microphone
Style
Push-to-Talk
Access
Free trial or plan + AI key
You need
headphones
  1. Set the other person’s language as "Other language"; each of you takes one earbud.
  2. When they speak, set "🌐 Translates to" to your language and hold the button; when it’s your turn, tap "🌐 Translates to" to switch to their language. Either way, hold the button while the person speaks.
  3. Switch direction only after the previous translation has finished.

Limit: There is one output: both of you hear every translation. Switching before it ends cuts off what was still playing. We haven’t tested it in a long conversation yet.

Leisure

Watch a livestream, series or sports from abroad

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Tab / System
Style
Continuous
Access
Free trial or plan + AI key
You need
headphones
  1. Open it in a tab (YouTube, Twitch…).
  2. In Listen, pick "Tab / System", set "🌐 Translates to" to your language, press ▶ and check "Share audio".
  3. For movies, Consecutive helps: let a bit play, pause and use "⏸ Pause capture" → "📥 Play translation".

Limit: A few seconds of delay; the original sound plays along (voice-over, not dubbing); restart every 3 h.

Watch a streaming series or movie in the browser

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Tab / System
Style
Continuous
Access
Free trial or plan + AI key
You need
headphones
  1. Open the movie in a browser tab (Netflix, Prime Video, Disney+ or any other service).
  2. In Listen, pick "Tab / System", set "🌐 Translates to" to your language, press ▶ and check "Share audio".

Limit: Services with copy protection (DRM) may not hand over the tab’s audio — we haven’t confirmed it on every service yet. If no translation comes out, point your phone at the screen, as in the TV card. Voice-over, not dubbing; restart every 3 h.

Play a PC game translated (dialogue and story)

Where
Computer (Chrome, Edge or another Chromium browser)
Mode
Listen
Source
Microphone
Style
Continuous
Access
Free trial or plan + AI key
You need
headphones, virtual audio cable
  1. On Windows, in Settings › System › Sound › Volume mixer, send only the game’s output (Steam, Epic or anywhere else) to the virtual cable.
  2. In Listen, pick Microphone with the cable as the input, set "🌐 Translates to" to your language and press ▶.

Limit: Works best with dialogue and story (RPGs, narrative games) rather than fast action. With the game on the cable, you hear the translation, not the original sound. We haven’t tested every game: some may need to be reopened after you switch the output.

Full step-by-step: Virtual audio cable: what it is and how to translate any meeting · How to install VB-CABLE on Windows (step by step)

Translate the TV’s sound with your phone

Where
Phone
Mode
Listen
Source
Microphone
Style
Continuous
Access
Free trial or plan + AI key
You need
headphones
  1. Set "🌐 Translates to" to your language.
  2. Point the phone at the TV and press ▶. Use headphones (required).

Limit: Room noise and a quiet TV make the translation worse.

Travel

Understand what people tell you at the counter, in a taxi, at the pharmacy

Where
Phone
Mode
Listen
Source
Microphone
Style
Push-to-Talk
Access
Free trial or plan + AI key
You need
headphones
  1. Set "🌐 Translates to" to your language.
  2. Hold the button while the person speaks, let go and hear the translation in your headphones.
  3. Since the microphone only listens while you hold it, the noise between sentences is not sent.

Limit: Needs internet. Use headphones: the microphone stays open a few seconds after you let go.

Try it for your case

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