suflerIt hears the call, not the room
sufler listens only to what Teams plays through your speakers or headphones. Your microphone is never touched, and there's no bot joining the meeting.
The prompter for your calls
When the call switches language, you don't miss a line.
sufler is a Mac app that translates your Teams calls in real time. When colleagues drift into Slovenian, German or Albanian, it quietly prompts you with live subtitles in English or your own language, labelled by who's speaking.
▶ Watch sufler in a real call (video on YouTube)
For Microsoft Teams and any app on your Mac · macOS 26 · Apple Silicon · Nothing leaves your Mac
How it works
A prompter in three acts
In the theatre, the sufler sits hidden at the edge of the stage and whispers the lines an actor would otherwise miss. That is the whole idea.
It works out who said what
Whisper recognises the speech and the language, even when people switch mid-sentence. Voices are told apart as Speaker A, B, C, which you can rename.
It whispers the line to you
About two seconds after someone finishes a sentence, the translation appears in the menu bar and in a floating subtitle bar that stays on top of full-screen Teams.
Features
Built for the meetings you're half-excluded from
Knows who's speaking
Every line is tagged Speaker A, B, C by voice. Right-click a label to rename it to Marko or Ana, and it sticks for the rest of the call.
95 languages
It understands them all, and translates into English or your own language, including Albanian, Slovenian and Croatian, which most tools skip.
Subtitles over everything
A floating caption bar stays above Teams, even in full screen. Drag it anywhere and make the text as large as you like.
Speaks your jargon
Add your product names and terms of art, and they come out spelled right instead of "Kafka" becoming "coffee".
Vocabulary hint
Kafka, Kubernetes, PSD2, sprint review
Keep the script, if you want
Copy or save the whole transcript as text, with times, speakers, and the original wording under each translation. Nothing is saved unless you choose to.
Not just Teams
Switch to "All system audio" for Teams in the browser, Zoom, Google Meet, Slack huddles, or a recorded meeting playing on your Mac.
Captions
Can't hear the call? Read it.
sufler doesn't have to translate. Set the subtitle language to the one people are speaking and it becomes live captions for every call on your Mac, with each line labelled by who said it.
Follow every voice, not just the loud ones
Compressed call audio, accents and people talking over each other are hard to follow when your hearing isn't perfect. sufler writes it all down and shows who's speaking, so you're not left guessing.
The room can be as loud as it likes
On a train, in a café or next to a busy open-plan desk, sufler still gets every word. It reads the call's audio straight from your Mac, not through a microphone, so background noise never reaches it.
Keep the sound down
A sleeping baby, a shared office, a library, or headphones left at home: turn the volume low and follow the call on screen instead.
Languages
It understands your colleagues in their own words
Speech in any of these is recognised automatically, and each can also be your subtitle language.
SlovenščinaSlovenian
ShqipAlbanian
HrvatskiCroatian
СрпскиSerbian
BosanskiBosnian
МакедонскиMacedonian
DeutschGerman
ItalianoItalian
PolskiPolish
ČeštinaCzech
MagyarHungarian
RomânăRomanian
УкраїнськаUkrainian
EspañolSpanish
FrançaisFrench
PortuguêsPortuguese
TürkçeTurkish
ΕλληνικάGreek
हिन्दीHindi
中文Chinese
日本語Japanese
and 74 more: see all 95
Privacy
What's said in the meeting stays on your Mac
Company calls are confidential, so sufler does all its work on your own Mac: no cloud, no account, no subscription. Read exactly what it does and doesn't send in our privacy policy.
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No audio leaves your computerSpeech recognition, translation and speaker labels all run on your Mac's own chip.
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No account, no trackingYou don't sign up for anything, and sufler doesn't collect analytics about you or your calls.
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Nothing is kept by defaultThe transcript lives in memory and is gone when you clear it or quit. Saving it is always your choice.
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Online only onceThe first time, sufler downloads its speech and translation models. After that it works on a plane.
Pricing
Pay once. Keep your seat.
No subscription. sufler runs on your Mac, so there are no servers for us to charge you for each month.
- System
- macOS 26 or later
- Mac
- Apple Silicon: M1 or newer
- Space
- About 4.5 GB for the speech and translation models
- Works with
- Microsoft Teams, plus any app that plays audio
Admit one · sufler 1
€39one-time
- Every feature, all languages
- Free updates for version 1
- Use it on 2 Macs, and move it any time
The trial is the full app, with no card needed. When you buy, your licence key arrives by email: paste it into sufler to unlock it. Prices include VAT where it applies.
At a glance
sufler in one table
- What it is
- A Mac menu bar app that shows live, translated subtitles of your calls
- Works with
- Microsoft Teams, Zoom, Google Meet, Slack huddles and any app that plays audio on your Mac
- Languages
- Recognises speech in 95 languages and translates into English or any of them, including Slovenian, Albanian, Croatian, Serbian, German and Italian (full list)
- Speakers
- Labels each voice as Speaker A, B, C, and you can rename them
- Speed
- A subtitle about 1 to 3 seconds after each sentence
- Privacy
- Runs entirely on your Mac: no cloud processing, no account, no transcript kept unless you save it
- Price
- €39 once, for 2 Macs, including all version 1 updates. 7-day free trial
- Requires
- macOS 26 or later, Apple Silicon (M1 or newer), about 4.5 GB for the models
Questions
Before the curtain goes up
How is sufler different from Teams' own translated captions?
Microsoft's translated captions are part of the Teams Premium or Microsoft Copilot add-on licences, which either the meeting organizer or you need to have. sufler works in any call you join, whoever organized it and whatever plan they're on, also works in Zoom and Google Meet, labels who's speaking, and does all its processing on your own Mac instead of in the cloud.
Can I translate a Microsoft Teams meeting in real time on a Mac?
Yes. sufler listens to the audio Teams plays on your Mac and shows each sentence as a subtitle in English or your chosen language, usually 1 to 3 seconds after the speaker pauses. It doesn't need anything installed by your company and doesn't join the meeting.
Can I try it before buying?
Yes. The download is the full app with a 7-day free trial and no card needed. Buy any time during or after the trial, paste your licence key into sufler, and it carries on.
How many Macs can I use it on?
Two, for example a work Mac and a personal one. To move sufler to a new Mac, open Settings › Licence › Deactivate this Mac on the old one, then enter your key on the new one.
Will the others know I'm using it?
sufler doesn't join the meeting or appear in it; it only listens to the audio on your own Mac. Recording or transcribing people can still be covered by workplace rules and privacy laws such as GDPR, so check what applies to you and tell participants when that's required. sufler helps: it reminds you to let people know, with a message ready to paste into the chat, and asks before you save a transcript.
Can I use sufler for captions without translation?
Yes. Choose the language people are speaking as your subtitle language, and sufler shows what's said in that language, word for word, with speaker labels. That makes it useful if you're hard of hearing, in a noisy place, or can't turn the sound up.
Does background noise affect the subtitles?
No. sufler reads the call's audio directly from your Mac, not through a microphone, so the noise around you never reaches it. Only the quality of the call itself matters.
How fast are the subtitles?
A line usually appears about 1 to 3 seconds after the speaker pauses. sufler waits for a natural break, so it can translate whole sentences instead of fragments.
Does it work with Zoom, Google Meet or Teams in the browser?
Yes. Choose “All system audio” instead of “Microsoft Teams” and sufler subtitles whatever your Mac plays.
How does it tell speakers apart?
By voice. Each sentence gets an acoustic fingerprint that is matched against the voices heard so far in the call. Very short remarks take the previous speaker's label, and when two people talk over each other the louder one wins.
Does it need an internet connection?
Only once, to download the speech and translation models (about 4.5 GB). After that it works fully offline.
Does it run on Intel Macs?
No. Live speech recognition needs the graphics and neural hardware in Apple Silicon (M1 and newer) to keep up with a conversation.