Doubtnut (by ALLEN)
Video doubt-solving from a photo of the question
Now part of ALLEN: doubtnut.com redirects to ALLEN, which sells "Doubtnut by ALLEN" courses (checked 4 October 2026).
The Four Mismatches · Doubtnut (by ALLEN)
Partly fits
For a student in India, the country it was built for.
LanguagePartly
Teaches in Hindi but not English.
- The maker lists: Hindi
- Classrooms in India use: Hindi, English
PriceNot verified
We haven't yet confirmed the low-cost line for India.
DeviceNot verified
We haven't yet checked the maker's own pages for which devices it runs on.
Independence: our publisher builds learning products too. We never review or score its products, and no tool pays to be listed or to rank higher — how we assess fit.
What it does
What the AI actually does — Photo-to-solution: a student photographs a question; OCR matches it against a repository of solved questions and returns the matching video solution.
Why it was built — Attacked the most common student micro-need — 'solve this one question now' — with a camera instead of a course.
Who built it
- Company
- Doubtnut
- Founders
- Aditya Shankar · Tanushree Nagori
- HQ / origin
- Gurugram, Haryana, India
- Founded
- 2016 (app launched Oct 2017)
- Model
- B2C
- Ownership
- Acquired by Allen Career Institute (Dec 2023)
- Exam systems
- CBSE · JEE · NEET
- Languages
- Hindi · English · regional languages
We record durable facts only — no funding-raised or user-count figures. Unverified fields are marked [TBD] rather than guessed.
Where it sits
Doubtnut (by ALLEN) is on the Learning Tools Index, in exam prep & regional platforms, built in India.
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