Live captions and translation for both sides of a conversation, on your Windows PC.
Built for professional interpreters, and for anyone on a call across a language gap. DuoVox writes down what each person says and translates it, live and side by side, from a Teams or Zoom call, anything else your PC plays, or the people in the room. The free plan runs offline with no time limit.
For Windows 10 and 11, from the Microsoft Store.
The video plays from YouTube. Nothing is loaded from YouTube until you press play. Watch on YouTube
See both sides of the dialogue separately, so nothing gets mixed up. Each language gets its own dedicated panel with real-time text.
From English and Russian to Japanese, Arabic, Hindi and many more. The full interface is available in every supported language, not just the transcription.
Fast, natural-sounding translations that aim to follow real speech. DuoVox is designed to cope with everyday accents and background noise, though accuracy can vary in difficult audio — always verify important details.
No signal? No problem. DuoVox includes built-in offline transcription that works without internet — available on all tiers. Great for holidays and travel.
Teams, Zoom, Google Meet and WhatsApp calls, YouTube and films, with nothing joining the meeting. Or switch to the microphone for the people in the room. Video calls →
Audio is processed in real time and not stored by us; on paid tiers it is streamed to our AI provider for real-time processing only. Providers may keep limited operational logs under their own privacy policies. Transcriptions exist only on your device and are cleared when your session ends. The Free tier works entirely on-device. Enable Private Mode for the strictest, no-local-log option.
DuoVox is designed to cope with everyday accents and background noise, though accuracy can vary in difficult audio — always verify important details. Whether you're ordering coffee abroad or following a business meeting, it aims to follow real speech as it happens.
Select a primary language and a target language. DuoVox offers 49 languages — 43 on Professional, 33 on Standard, and 30 that work offline on Free. See exactly what each plan covers.
Press Start. DuoVox listens to what your PC is playing, such as a call or a video, or to the people in the room through your microphone, and starts writing it down straight away.
Each language gets its own panel. You see your words on the left and the translation on the right — in real time.
DuoVox detects which language is being spoken and puts each sentence in the right panel. Just talk naturally — it keeps up.
Built for real two-way conversations on your PC — see how it compares with the most popular translation apps.
| Feature | DuoVox | Google Translate | iTranslate | Microsoft Translator | DeepL |
|---|---|---|---|---|---|
| Live Conversations | |||||
| 4-box dual-lane viewBoth speakers’ words and both translations on screen at the same time | ✓ 4 live boxes Standout | Phone split screen | — | Phone split screen | Face-to-face split screen |
| Continuous, hands-free translationJust talk — no tapping a button and waiting your turn | ✓ Continuous | Conversations take turns | Turn-based | Turn-based | Paid plans only (DeepL Voice) |
| Captions anything playing on your PCCalls, meetings, YouTube and films — from any app | ✓ Any app Standout | — | — | — | Teams, Zoom & Meet only (paid) |
| Works Your Way | |||||
| Free offline modeNo internet needed, and your audio never leaves your PC | ✓ Free plan, 30 languages | Text and camera; live on Pixel phones only | Paid only | Text only | — |
| Desktop app for Windows | ✓ | Web only | Web and Mac only | Retired in 2021 | ✓ |
| Professional Tools | |||||
| Subtitles from live sessions and media filesReady-to-use SRT and VTT files, transcribed and, if you want, translated | ✓ Professional Standout | — | — | — | Existing subtitle files only |
| Glossary & keyword boostNames, jargon and specialist terms come through right | ✓ Professional | — | — | — | ✓ Glossary |
| Privacy & Security | |||||
| Private ModeCaptions are cleared when you stop, with no local log, copy or export | ✓ Professional Standout | — | — | — | — |
| No third-party ads or tracking | ✓ | — | — | ✓ Apps | No ads; tracking on its website |
| Best for… | Live two-way conversations, calls and videos on your PC | Casual text & voice | Casual voice | Phrase-by-phrase translation on a phone | Written translation & business meetings |
No account needed. Free forever.
Competitor information checked on 6 October 2026 against each company’s own website and app store listings. — means not offered, or not found on the company’s own pages. Features change often; if anything here is out of date, please tell us at support@duovox.net.
Enhanced terminology recognition for specialist professional settings, with Private Mode for sensitive content. As an assistive aid, DuoVox supports — but does not replace — a qualified human interpreter.
How DuoVox helps interpreters →
ProfessionalFollow lectures, video calls with family abroad, and foreign-language films and videos. The Free plan works offline, with no internet connection.
Free or StandardFollow international meetings, client calls, and negotiations in real time. Export subtitles and translate documents for your records.
Standard or ProfessionalTry DuoVox without signing up to a monthly plan. Buy credits as you need them — great for one-off translation, testing the service, or topping up beyond your subscription.
Pay-As-You-GoChoose the plan that fits how you use DuoVox. Longer-term plans cost less than paying month by month, or pay only for what you use with Pay-As-You-Go.
Default prices in USD. UK visitors see GBP. DuoVox is not yet available in the EU or EEA. The Microsoft Store charges the equivalent in your local currency at checkout. All subscriptions can be cancelled at any time.
Best for: trying it out & offline privacy
No account needed. Free forever.
Best for: travellers, students & everyday bilingual chat
Best if you use it 10+ hours per month.
Best for: businesses and professional interpreters
Best if you use it 28+ hours per month.
Best for: trial, occasional use or top-up
Pay-as-you-go credits are purchased inside the app
Try either tier without subscribing.
On a subscription, Pay-As-You-Go hours you already hold take over automatically when your monthly hours run out — even mid-session, so a long call carries on without a break. If you hold none, you'll be offered three choices: buy hours (they're ready for your next session), continue in free offline mode for the rest of the session (lower quality, no internet needed), or end the session. We never auto-charge beyond your subscription without explicit confirmation. See our fair usage policy.
Watch our short getting-started video. It shows how to choose your two languages, choose what DuoVox listens to, start captioning, change the layout and find everything else in the menu. Every other feature has its own short video in our video tutorials. The menu in the app also has a full User guide and Help.
Yes. DuoVox uses dual-lane transcription with automatic language detection. Each speaker's words appear in their own panel, and translations appear alongside in real time.
Audio is processed in real time and is not stored by us; on paid tiers it is streamed to our AI provider for real-time processing only, and our AI provider does not use it for model training under their current data policies. Providers may keep limited operational logs under their own privacy policies, which can change without notice. On the Free tier, all processing happens entirely on your device.
If you hold Pay-As-You-Go hours, they take over automatically and your session carries on — so if you have a long call coming and your plan is nearly used, buy an hour or two first. Otherwise you'll be warned as your hours run low, and when they run out you can buy hours for your next session, continue in free offline mode, or end the session. We never auto-charge you beyond your subscription without explicit confirmation.
Yes. DuoVox includes built-in offline transcription with 30 languages on all tiers, including Free. Offline translation is also available. AI-powered features require an internet connection.
No. DuoVox works without accounts or sign-ups. Download the app and start using it immediately. Subscriptions are managed through the Microsoft Store.
DuoVox supports 49 languages in total, but how many you can use depends on your plan. On Free, 22 languages work completely on your device — captions and translation both — and a further 8 give you captions on your device with translation needing an online plan. Standard covers 33 languages with live AI transcription and translation, and Professional covers 43. The full list, and exactly what each language does on each plan, is on the supported languages page.
Private Mode is the strictest privacy setting, included with Professional. It stops DuoVox writing any local logs, so nothing about your session is left on the machine afterwards. It is intended for sensitive conversations — legal, medical or commercial — where even a local record is unwanted. Audio is never stored by us on any tier; Private Mode goes further by removing the on-device trail as well.
Yes, on the Windows desktop app. Standard includes document translation. Professional adds transcription and translation of audio and video files, so you can work from a recording rather than a live conversation. These are desktop features and are not available in the mobile app.
Yes, with Professional on the Windows desktop app. DuoVox exports SRT and VTT subtitle files, which open in most video editors and players. Professional also includes a Translation Glossary, so recurring names and specialist terms come out the way you want them.
You can cancel at any time through the Microsoft Store. You keep paid features until the end of the billing period you have already paid for. Refunds are handled by that store under its own refund policy, not by us. If you think you are owed a refund for unused subscription time, email support@duovox.net and we will look at it case by case. The full wording is in section 10a of the Terms of Use.
DuoVox uses AI-powered speech recognition and machine translation to assist communication. Like all transcription and translation tools, results may contain errors and should not be treated as a verbatim or certified record. DuoVox is an assistive communication aid and does not replace a qualified human interpreter for regulated or high-stakes contexts. Accuracy can be affected by background noise, accents, microphone quality, overlapping speech and domain-specific terminology. DuoVox is a communication aid and should not be relied upon as the only source of meaning in legal, medical, safety-critical, financial or official situations. Always verify important information independently.
Start with the free tier — no account, no credit card, no commitment.