Lecsy - AI Lecture Transcriber

Sign in for 3 hours of Premium AI English transcription, free. Join the waitlist for 5 more — early users. Live captions, AI summaries (9), Exam Mode. Free.

Lecsy turns any English lecture into clean, searchable notes — automatically.

Hit record at the start of class. Walk out with a full transcript, an AI summary, and a set of likely exam questions. Built by an independent developer for university students who are tired of retyping their notes at midnight.

Sign in and get 3 hours of Premium AI English transcription, free. No credit card. No subscription. Just sign in and record.

■ Made for students, not meeting rooms • One-tap background recording — keeps running when your screen locks or you switch apps • 3 hours of Premium AI English transcription, free — high accuracy with live captions • Join the waitlist to unlock 5 more premium hours • After your premium hours: offline English transcription on device (WhisperKit tiny.en), unlimited — works in lecture halls with zero Wi-Fi • AI summaries: key points, section outlines, definitions • Exam Mode: AI generates likely test questions with model answers • AI summaries in your native language — record the English lecture, read the summary in any of 9 languages (English, Japanese, Spanish, French, German, Portuguese, Italian, Russian, Hindi) • Web access at lecsy.app — read, search, and copy transcripts on any laptop

■ Privacy you can verify Your .m4a recording file always stays on your iPhone — there is no code path in Lecsy that uploads it. During your premium hours, the live audio stream is sent over TLS to a secure speech-to-text service with zero retention (it is not stored). After your premium hours, transcription runs entirely on your iPhone and audio never leaves your device.

■ What actually gets sent to a server (honest version) ◎ Recorded .m4a file — NEVER. Stays on your iPhone in every state. ◎ Live audio stream (during premium hours only) — sent in real time over TLS to a secure speech-to-text service for English transcription, not retained. After premium hours, transcription runs on-device and no audio is sent anywhere. ◎ Transcript text — only if you're signed in, for backup. Toggle off anytime in Settings → Privacy → Cloud Sync. ◎ AI summaries & Exam Mode — when you tap the button, the transcript TEXT (not the audio) is sent to OpenAI to generate the summary. OpenAI does not train on API content. ◎ Ads, trackers, IDFA — none. No ad SDKs, no third-party analytics. ◎ AI training on your data — never. Not by us, not by our providers.

■ Who Lecsy is for • Undergrads who can't keep up with fast-talking professors • International students in English-taught classes — keep up with fast lectures, then read AI summaries in your first language • STEM students who need accurate transcripts of dense lectures • Pre-med, pre-law, and grad students prepping for exams from recorded classes • Students who do not want their voice on someone else's server

■ What you get for free Everything. Sign in and get 3 hours of Premium AI English transcription with live captions (plus 5 more by joining the waitlist). After your premium hours: English transcription on-device (offline, no Wi-Fi needed) unlimited, AI summaries in 9 languages, Exam Mode, and web access. No paywall — Lecsy is free.

■ Requirements • iOS 17.6 or later • On-device speech model (~75 MB) is bundled — no download needed • Premium hours require internet (cloud transcription, zero retention); after that, English transcription works offline • Sign-in required (Apple, Google, or magic link) • Cloud sync, AI summaries, and Exam Mode require internet

■ Pricing • Free. Sign in and get 3 hours of Premium AI (plus 5 more via the waitlist), then unlimited offline English transcription. • No subscription. No ads. No trackers. No data sold.

■ Links Privacy Policy: https://lecsy.app/privacy Terms of Service: https://lecsy.app/terms Support: support@lecsy.app

Built by one independent developer. Bug reports and feature requests welcome via the in-app feedback form or email.