Live transcription · Bilingual understanding · AI interpretation

AI transcribes every word—
then reads it in your language.

From lectures and meetings to talks, LecSync transcribes and translates everything you hear, and can read the translation into your earphones in a natural voice. Afterward, get bilingual outputs and notes automatically.

01 · AI Live Transcription

Understand it live. Turn every word into something useful.

Transcribe and translate lectures, meetings, and interviews in real time, then turn them into notes, highlights, and answers you can keep exploring.

Explore Live Transcription

02 · Simultaneous Interpretation

Eyes on the speaker. Your language in your ears.

In foreign-language lectures and meetings, LecSync translates in real time and reads the translation to you in a natural voice. No more staring at captions: look up and keep up with the speaker and the slides.

Explore Simultaneous Interpretation

01 · AI Live Transcription

Understand it live. Turn every word into something useful.

Transcribe and translate lectures, meetings, and interviews in real time, then turn them into notes, highlights, and answers you can keep exploring.

Explore Live Transcription
LecSync
LecSync recording interface showing real-time transcription and translation

Bidirectional Translation

Real-time translation across 60+ languages. Choose on-device AI for privacy or cloud translation for maximum accuracy and language coverage.

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Auto Meeting Notes

Every session automatically generates structured meeting notes with key points and highlights. Summaries delivered to your inbox — zero manual note-taking required.

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Instant AI Chat

Ask questions about your transcript the moment recording ends. "What was said about the quarterly targets?" Get instant, context-aware answers from your AI assistant.

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Hands-off after class

Stop recording. LecSync does the sorting.

No more dragging recordings into folders. LecSync can tell which lecturer is speaking, files each recording under the right course, and turns it into bilingual study material.

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Filed under the right course

Voice recognition tells which lecturer is speaking and moves the recording into that course’s folder. For a new course, it creates the folder and names it from the content. You’re told every time, and one tap undoes it.

Bilingual study notes, ready to review

Every lecture becomes exam-focused notes with the original language side by side with yours. Tap any point to jump to the exact sentence and hear it again. Before exams, merge several lectures into one review pack.

Upload the slides, get the jargon right

Drop PPT or PDF files into a course folder. LecSync pulls out the key terms and uses them to recognize every future recording of that course.

Voice recognition is only used to organize your own recordings, is never shared, and can be turned off in Settings anytime.

AlsoName a speaker once, and future recordings recognize them · Face-to-face conversation translation that knows who’s speaking which language · With an offline model downloaded, captions keep going on your phone without internet

Fast and accurate

Fast enough to follow live. Accurate enough to use.

Low latency keeps the words in step with the speaker, while industry-leading accuracy means less cleanup and more attention on what is happening now.

<200ms

Live transcription latency

1.25% WER

Industry-leading word error rate

Based on LecSync internal benchmarks. Results vary with audio quality, accent, language, and specialized vocabulary.

02 · Simultaneous Interpretation

Eyes on the speaker. Your language in your ears.

In foreign-language lectures and meetings, LecSync translates in real time and reads the translation to you in a natural voice. No more staring at captions: look up and keep up with the speaker and the slides.

Explore Simultaneous Interpretation
LecSync

La mitochondrie est l’endroit où la cellule produit l’essentiel de son énergie.

The mitochondria is where the cell produces most of its energy.

Donc, quand l’oxygène manque, ce processus ralentit fortement.

So when oxygen runs low, this process slows down dramatically.

Reading to you
Female · 1.0×

Each sentence is read aloud right after the speaker finishes it; long sentences are split at commas

Keeps up with fast talkers: speeds up automatically when it falls behind, without changing pitch

Male or female voice, 0.8–1.5× speed; transcript, translation, and audio are saved as usual

60+ Languages Supported
English中文日本語EspañolFrançaisDeutschالعربيةहिन्दीPortuguês한국어РусскийItalianoTürkçeTiếng ViệtภาษาไทยNederlandsPolskiSvenskaBahasaČeštinaΕλληνικάMagyarRomânăУкраїнськаEnglish中文日本語EspañolFrançaisDeutschالعربيةहिन्दीPortuguês한국어РусскийItalianoTürkçeTiếng ViệtภาษาไทยNederlandsPolskiSvenskaBahasaČeštinaΕλληνικάMagyarRomânăУкраїнська

What people are saying

Real Stories, Real Impact

From lecture halls to boardrooms, see how professionals capture every word that matters.

Lena H.

PhD Candidate, Comparative Literature

I attend three seminars a week in two languages. LecSync handles both seamlessly — I just review the summaries on my commute home.

2 languages, 0 effort

Ryan O.

Head of Content, Media Agency

We replaced our $2,000/month transcription vendor with LecSync. Better accuracy, instant delivery, and the AI search alone saves us hours every week.

$2K/mo saved

Mei-Lin C.

Community Program Director

Running bilingual workshops used to require two facilitators. Now one person runs the session while LecSync translates everything in real-time for both groups.

1 facilitator, 2 languages

Dr. Sarah L.

Attending Physician, Internal Medicine

During a department presentation, I moved past a slide without explaining why the result mattered. LecSync suggested one sentence that connected the data to the clinical decision—exactly what the room needed.

One sentence, clear takeaway

Henrik J.

Engineering Manager, Automotive

While rehearsing a technical review, LecSync caught my filler words and showed where my explanation drifted from the current slide. The final report helped me build a much tighter opening.

A sharper technical story

Fatima A.

International Sales Consultant

During a multinational client pitch, LecSync followed my deck, spotted the missing value statement, and prompted me before I changed slides. I recovered the point without breaking my flow.

The key point, in time

Got questions?

Frequently Asked Questions

1Is LecSync really free to start?
Yes. LecSync offers a generous free plan with real-time transcription, local AI translation, and session history. No credit card required — just sign up and start recording.
2How accurate is the real-time transcription?
LecSync delivers industry-leading 1.25% word error rate with sub-200ms latency. Upload reference documents and terminology lists to further improve domain-specific accuracy.
3What languages does LecSync support?
LecSync supports real-time transcription in 60+ languages and bidirectional translation between any of them. Choose local AI translation for privacy or cloud translation for maximum accuracy.
4What is the difference between live translation and simultaneous interpretation?
Live translation shows the translation as captions. Simultaneous interpretation goes one step further and reads it into your earphones in an AI voice, so you can keep your eyes on the speaker and slides and glance at the captions only when you miss something. Simultaneous interpretation is included in the Business plan.
5Can I use LecSync for my team?
Absolutely. LecSync supports shared folders, granular permissions, and auto-generated meeting notes that the whole team can access. There's no limit on team size.

Understand every word. Deliver every idea.

Use one tool for live transcription, bilingual understanding, and simultaneous interpretation.

Start Using LecSync — It's Free