19 de maio de 2026

1 App to Record, Transcribe and Summarize Online Classes

Discover how a single app replaces your recorder, notebook, and manual summaries — turning any online class into organized study material with AI.

Sintesy Sintesy

Anyone who’s tried studying from recorded lectures knows the cycle: hit play, pause, take notes, rewind, pause again, jot down a bit more. A 1-hour class turns into 2.5 hours of screen time. And in the end, your notes are scattered across notebooks, phone memos, and slide screenshots.

Sintesy solves this in a single flow. You record (or upload audio), and the app delivers a transcript, auto-generated summary, and a chat where you can ask questions directly about the content. No switching tools.

Record or upload — Sintesy handles the rest

The workflow is simple:

  1. Record the class directly in Sintesy (via browser or phone) or upload the audio if you already have the file.
  2. The transcript is ready in minutes, with speaker labels and timestamps.
  3. The auto-summary highlights the key points, topics covered, and next steps.
  4. Use the AI chat to ask questions about the content — like having a private tutor who’s read through the entire lecture.

No more scrubbing through audio hunting for “that part where the professor explained the formula.”

Summaries that actually help you review

What sets it apart isn’t just the transcription — it’s what Sintesy does with the transcript afterward.

Beyond the auto-summary, the app generates a class roadmap: a structured list of topics in the order they were covered. This becomes an instant review guide. Instead of rereading 20 pages of transcript, you review by topic and dive deeper only where you need to.

You can also generate a mind map from the content, visually connecting the concepts. Perfect for last-minute exam prep.

Ask questions directly against the content

Sintesy’s AI chat isn’t a generic chatbot — it answers based exclusively on that lecture’s content. You ask “what’s the difference between the two methods the professor explained?” and it searches the transcript, not the internet.

This transforms how you study: instead of jotting down questions to ask later (and forgetting half of them), you resolve them on the spot.

For those juggling multiple subjects at once

Anyone studying for exams, residency, college, or certifications is usually dealing with 4, 5, or 6 subjects at the same time. Sintesy organizes everything with folders and tags — you sort by subject, professor, or date and find any content with semantic search. Type “lesson on photosynthesis” and the app finds it even if you don’t remember the file name.

Quick comparison

TaskTraditional methodWith Sintesy
Taking notes during classPause, write, rewindAutomatic transcription
Creating summariesRewrite by handAI-powered auto-summary
Reviewing for an examReread entire notebookTopic roadmap + chat
Getting help with a questionWait for office hours or GoogleChat with the lecture content
Finding an old lectureDig through Google DriveSemantic search

Get started in 2 minutes

  1. Go to sintesy.me
  2. Click “New recording” or drag and drop an audio file
  3. Once the transcript is ready, explore the summary and chat

Your first class is free. After that, plans start with generous transcription hours per month — more than enough to cover an entire semester of online classes.