Structured learning for YouTube videos
Pi Lens-Notes, PYQs on YouTube
, developed by
PhysicsWallah
, is an educational app designed to make YouTube-based learning more structured. It sits alongside YouTube as an
independent educational tool
and is not affiliated with or endorsed by
YouTube
.
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The app provides study resources such as
notes
,
summaries
,
previous year questions (PYQs)
,
quizzes
, and
live-class polls
for students preparing for Class 9–12 board exams and competitive exams including JEE, NEET, CUET, UPSC, State Boards, and MHTCET.
Video notes and practice tools
For educational YouTube videos, Pi Lens provides chapter-mapped materials related to the topic being taught. These include
mind map notes
,
formula sheets
,
short notes
,
lecture slides
, and
curated PDFs
. The app also offers
structured, auto-generated video summaries
, helping students review long lectures more quickly.
For practice, Pi Lens provides
chapter-matched PYQs
based on the last five years of exam data. It also supports active recall through
instant quizzes
built from the content of the video being watched, giving students a way to check their understanding soon after studying a topic. The app includes
live polls
as well, though this feature is specifically available during PhysicsWallah’s live classes rather than across all YouTube videos.
A practical tool for more active YouTube learning
Pi Lens helps students get more out of YouTube study videos by keeping notes, summaries, PYQs, quizzes, and live-class activities close at hand. It makes revision feel more organized and encourages learners to check their understanding while the lesson is still fresh.