Lecsy - AI Lecture Transcriber

Name: Lecsy - AI Lecture Transcriber
Rating: 4 (3 reviews)
Author: Takumi Nittono

Offline Record & AI Summaries

Free · Designed for iPad. Not verified for macOS.

3 Ratings
Age Rating

4+
Years
Category

Education
Developer

Takumi Nittono
Language

EN
English
Size

96.2
MB

Lecsy turns lectures into clean, searchable notes — even from the back row of a 200-seat hall. Hit record at the start of class. Lock your iPhone, take it to your next class, walk back to your dorm. Stop the recording, type a title, and walk out with a full transcript and an AI summary. Built by an independent developer for university students who refuse to retype their notes at midnight. 100% free. No ads. No subscription. No credit card. No sign-up required to record. ■ Built for actual lecture halls • Tuned for distant speakers — quiet professor 30 feet away? Lecsy boosts up to +21 dB before transcription • Background recording — keeps running when your screen locks, you switch apps, or take a phone call • Records up to 3 hours per session • Forget-to-stop notifications — get an alert 30 min and 5 min before auto-stop, plus a confirmation when it saves itself • Smart auto-pause on phone calls, with auto-resume when the call ends • Crash recovery — if the app dies mid-lecture, your audio is recovered on next launch • On-device speech-to-text (WhisperKit) — works in lecture halls with zero Wi-Fi ■ 9 languages, all on-device English, Japanese, Spanish, French, German, Portuguese, Italian, Russian, Hindi. Record in any of these. Read your AI summary in any of them. International students: lecture in English, summary in your first language. ■ AI features • Key points, section outlines, definitions — extracted in seconds • Exam Mode — AI generates likely test questions with model answers • Multilingual output — record in English, get the summary in Japanese (or vice versa) ■ Privacy: your audio file never leaves your iPhone Your .m4a file is never uploaded anywhere. There is no code path in Lecsy that sends your audio off your device. ■ What actually gets sent to a server (honest version) ◎ Audio (.m4a) — NEVER. Stays on your iPhone. ◎ Transcript text — only if you sign in AND enable Cloud Sync in Settings → Privacy. Off by default. ◎ AI summaries — when you tap the button, the transcript TEXT (not audio) is sent to OpenAI to generate the summary. OpenAI does not train on API content. ◎ No ads. No advertising SDKs. No behavioral tracking. No IDFA. ◎ Anonymized crash diagnostics via Sentry to fix bugs. ◎ Your data is never used to train AI models. ■ Who Lecsy is for • Undergrads who can't keep up with fast-talking professors • International students — read English lectures as Japanese summaries • STEM majors who need precise transcripts of dense lectures • Pre-med, pre-law, and grad students prepping from recorded classes • Privacy-conscious students who want their voice to stay on their device ■ What you get Recording, transcription, AI summaries, Exam Mode, all 9 languages, optional web access at lecsy.app — all of it, free. ■ Requirements • iOS 17.6 or later • On-device speech model setup on first launch (about 1 minute). Much faster on subsequent launches. • Recording and transcription work fully offline after that • Cloud sync, AI summaries, and web access require internet ■ Support Privacy: https://lecsy.app/privacy Terms: https://lecsy.app/terms Contact: support@lecsy.app Built by one independent developer. Bug reports, feature requests, and "this saved my GPA" messages all welcome via the in-app feedback form.

Ratings & Reviews

4.0

out of 5

3 Ratings

Amazing app
Mar 30

Jorge Hunter
This is so easy to use it and keep the lecture.
Amazing app
Mar 30

Jorge Hunter

This is so easy to use it and keep the lecture.
Glitchy
Mar 19

ArthurLemon
Received a phone call and declined it during a recording and lost my recording. Locked my phone and reopened the app and lost my recording. It doesn’t automatically save anything, you have to manually save it so if it glitches then you lose the recording. No way to take notes after the fact. Transcription isn’t the greatest especially for someone with a non-American accent. Super bare bones and hardly works unless you have the app open the whole time, don’t lock your phone, and don’t receive any phone calls. No way to contact support or report a bug/glitch, hence this review instead of emailing the dev. However the app is very new and has potential that’s why it gets 2 stars and not just 1. I may revisit this app later to see if it has improved.

Developer Response
Thank you for your detailed feedback — we really appreciate it.We’re sorry about the recording loss issue. We are currently working on improving auto-save and making recordings more stable, even during interruptions like phone calls or app backgrounding.We’re also actively improving transcription quality and overall reliability. Since this app is still in an early stage, feedback like yours helps us a lot.We hope you’ll give it another try in the future 🙏
Glitchy
Mar 19

ArthurLemon

Received a phone call and declined it during a recording and lost my recording. Locked my phone and reopened the app and lost my recording. It doesn’t automatically save anything, you have to manually save it so if it glitches then you lose the recording. No way to take notes after the fact. Transcription isn’t the greatest especially for someone with a non-American accent. Super bare bones and hardly works unless you have the app open the whole time, don’t lock your phone, and don’t receive any phone calls. No way to contact support or report a bug/glitch, hence this review instead of emailing the dev. However the app is very new and has potential that’s why it gets 2 stars and not just 1. I may revisit this app later to see if it has improved.
Developer Response Mar 22
Thank you for your detailed feedback — we really appreciate it.We’re sorry about the recording loss issue. We are currently working on improving auto-save and making recordings more stable, even during interruptions like phone calls or app backgrounding.We’re also actively improving transcription quality and overall reliability. Since this app is still in an early stage, feedback like yours helps us a lot.We hope you’ll give it another try in the future 🙏

Bug fixes

Version 1.27 May 12

Data Linked to You

The following data may be collected and linked to your identity:
- Contact Info
- User Content
- Identifiers
Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

Information

Seller: Takumi Nittono
Size: 96.2 MB
Category: Education
Compatibility: Requires iOS 17.6 or later.

iPhone
Requires iOS 17.6 or later.

iPad
Requires iPadOS 17.6 or later.

Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.3 or later.
Languages: English
Age Rating: 4+

4+

Learn More

Contains
User-Generated Content