A PDF note taker turns a document you already have into a notes page you can revise from. In Lecha you upload the PDF on app.lecha.app or in the iPhone / iPad app, and the app returns notes, quizzes, and flashcards. It does not read the PDF for you in an exam, and it does not raise a grade by itself.
lecha.app lists PDFs alongside audio, video, and images as inputs. The App Store listing (21 Aug 2026) is the iPhone/iPad side (iOS 16+). This URL already ranks (103 impressions, 2 clicks, position about 3.6 in the 22 Jul–18 Aug 2026 window). The old copy was a thin feature blurb with the sitewide trial snippet.
Key takeaways
Use the web app for a file on a laptop. Use iPhone or iPad if that is where the PDF lives.
Notes are the formatted page. Quizzes and flashcards are the study method. Rereading the new page is still rereading.
Ask whether the PDF may be uploaded (copyright, course policy).
Photo Tutor is for a photographed question, not for turning the whole PDF into an answer key.
When is a PDF the right input?
You have | Use | Don’t use |
|---|---|---|
A slides/handout PDF on a laptop | Waiting for a “web version” — it is live | |
The same file on iPhone or iPad | The iOS app | Android |
A live lecture instead of a file | The recorder — transcribe a lecture | A PDF tool on an empty notebook |
One homework question from the set | Photo Tutor on a photo of that question | Uploading the whole problem set as if it were your submitted work |
How do you turn a PDF into notes in Lecha?
Check you are allowed to upload the file.
Open app.lecha.app or the iOS app.
Add the PDF.
Use the notes page for revision. If a transcript-style view exists for that file, use it for wording you need to check.
Generate quizzes or flashcards the same day. Dunlosky, Rawson, Marsh, Nathan and Willingham (2013) rated practice testing high-utility and rereading low-utility (journal article). That paper does not evaluate Lecha.
Not for you
You need Android.
The PDF is copyrighted in a way your course forbids uploading.
You wanted a guarantee about exam scores. This page will not give one.
You wanted Photo Tutor to finish the problem set for you.
You only wanted a shorter file to highlight.
How Lecha helps
Shipped on lecha.app and the App Store as of 24 Aug 2026: PDFs (and audio, video, images) into notes, transcripts, quizzes and flashcards; lecture recording on iPhone/iPad; Photo Tutor; web. A free trial exists; this article does not state a length.
App Store rating as listed 21 Aug 2026: 4.6 out of 5 from 106 ratings. That is not a student count.
Open the web app or download on iOS.
FAQ
Can Lecha take notes from a PDF?
Yes. The homepage lists PDFs as an input that becomes notes, quizzes, and flashcards. Use app.lecha.app or iOS.
Is there a web PDF note taker?
Yes. The web app is live. Older site copy that said web was coming soon was wrong as of 21 Aug 2026.
Will this help me on the exam?
It can give you a notes page and retrieval practice. It cannot sit the paper.
Does it work on iPad?
Yes. iPhone and iPad, iOS 16.0+ / iPadOS 16.0+ as listed 21 Aug 2026.
Is there a free trial?
The homepage calls out a free trial. Check the current offer. This article does not state a length.
