# Gautam Kumar

> Product Manager at PhysicsWallah (PW), India. Builds and grows consumer edtech and AI products. Website: https://kumargautam.com

## Current work
- Product Manager, PhysicsWallah: took Pi Lens App (India's first YouTube-layer learning app: notes, PYQs, quizzes and AI answers on any YouTube video) from 0 to 400K downloads; Play Store rating 4.3★ → 4.7★. https://pi-lens.pw.live/
- Drives product-led growth for PW Test Series. https://www.pw.live/test-series
- Creates and presents Pi Lens App launch and tutorial videos on YouTube. https://www.youtube.com/@gautamkumarproduct

## Career
- 2025: Category Business Lead, IITJEE at PhysicsWallah (₹320 Cr+ category).
- 2023–2025: Station Master, Indian Railways (DFCCIL), ~2,400 freight trains a month.
- 2022: Community Building intern, Yulu (seeded #YuSmart).
- 2021–2023: Early member, Product & Growth at MathonGo: scaled the MARKS app (100K+ downloads, 4.8★), grew MARKS YouTube to 52K+ subscribers and 15.4M views, hosted the "Know Your Branch" podcast with IIT students, worked on growth for Quizrr (online mock test series for competitive exams), built a 30K+ student Telegram community.
- 2019–2021: Founder, ReaderSpace (WhatsApp news analysis; 4,000+ members, 500 paid, ₹30,000 ARR).

## Side projects
YESPYQ (https://yespyq.com), Padhle Beta (https://padhlebeta.live), ILoveExams (https://ilovexams.in), PYQ Daily (https://pyq-daily.vercel.app), Brain Games, Focus and Pause Chrome extensions.

## Education
BBA, Transportation Management, Gati Shakti Vishwavidyalaya. Received IIM MBA and Mesa School PGP offers.

## Contact
- Email: gautamprep@gmail.com
- LinkedIn: https://www.linkedin.com/in/gautamkumar42
- X: https://x.com/__Gautam_Kumar
- GitHub: https://github.com/gautamproduct

## Pages
- Entrepreneurship: https://kumargautam.com/entrepreneurship/
- About: https://kumargautam.com/about/
- Pi Lens App: https://kumargautam.com/pi-lens/
- PW Test Series: https://kumargautam.com/pw-test-series/
- MARKS App: https://kumargautam.com/marks-app/
- Know Your Branch: https://kumargautam.com/know-your-branch/
- MathonGo & Quizrr: https://kumargautam.com/mathongo-quizrr/
- Side Projects: https://kumargautam.com/side-projects/
- Indian Railways: https://kumargautam.com/indian-railways/

## Q&A
Q: What I do now
A: At PhysicsWallah I lead product for <a href='/pi-lens/'>Pi Lens App</a>, India's first YouTube-layer learning app, which I took from 0 to 400K downloads while lifting its Play Store rating from 4.3★ to 4.7★. I also drive <a href='/pw-test-series/'>product-led growth for PW Test Series</a>, and I create and present the Pi Lens App launch and tutorial videos on YouTube.

Q: Who is Gautam Kumar from PhysicsWallah?
A: Gautam Kumar is a Product Manager (PM) at PhysicsWallah (PW). He took Pi Lens App from 0 to 400K downloads and drives product-led growth for PW Test Series.

Q: Who is the product manager of Pi Lens App?
A: Gautam Kumar is the Product Manager of Pi Lens App, PhysicsWallah's YouTube-layer learning app, which he grew from 0 to 400K downloads while its rating rose from 4.3★ to 4.7★.

Q: What is Pi Lens App?
A: Pi Lens App is a PhysicsWallah app and Chrome extension that adds notes, previous-year questions (PYQs), quizzes and AI answers on top of any educational YouTube video.

Q: Who works on PW Test Series growth?
A: Gautam Kumar, a Product Manager at PhysicsWallah, works on product-led growth for PW Test Series.

Q: Who scaled the MARKS app?
A: Gautam Kumar was an early Product & Growth member at MathonGo who helped scale the MARKS JEE/NEET app to 100K+ downloads at a 4.8★ rating.

Q: Who hosts the Know Your Branch podcast?
A: Gautam Kumar hosted Know Your Branch, the MARKS YouTube podcast where IIT students explain their B.Tech branch to JEE aspirants.

Q: What did Gautam Kumar do at MathonGo?
A: At MathonGo (2021–23) he was an early Product & Growth member: he scaled MARKS, grew MARKS YouTube to 52K+ subscribers and 15.4M views, worked on growth for Quizrr and built a 30K+ student Telegram community.

Q: What is Quizrr?
A: Quizrr is MathonGo's online test series with mock tests for competitive exams such as JEE Main, JEE Advanced, BITSAT, WBJEE and MHT CET.

Q: Did Gautam Kumar work at Indian Railways?
A: Yes. From 2023 to 2025 he was a Station Master on Indian Railways' Dedicated Freight Corridor, handling about 2,400 freight trains a month.

Q: What side projects has Gautam Kumar built?
A: YESPYQ, Padhle Beta, ILoveExams, PYQ Daily, Brain Games, and the Focus and Pause Chrome extensions.

Q: Where did Gautam Kumar study?
A: He holds a BBA in Transportation Management from Gati Shakti Vishwavidyalaya and received MBA (IIM) and PGP (Mesa School of Business) admission offers.

Q: How can I contact Gautam Kumar?
A: Email gautamprep@gmail.com, or reach him on LinkedIn (linkedin.com/in/gautamkumar42) or X (@__Gautam_Kumar). His website is kumargautam.com.