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Addestra
Exam prep & regional platformsIndiaGlobal-South-built

Doubtnut

Video doubt-solving from a photo of the question

The Four Mismatches · Doubtnut

System-native

Assessed for an Indian Tier-2/3 student (its home market).

  • CurriculumPass

    Solutions mapped to CBSE/NCERT maths and science and the JEE/NEET tracks.

  • LanguagePass

    Hindi and regional languages — explicitly for Tier-2/Tier-3 towns.

  • PricePass

    Freemium photo-solving; the free tier does the core job.

  • InfrastructurePass

    Mobile-first, a photo of a handwritten question — minimal friction.

Four passes for the vernacular, mobile-first Indian student the English-only imports never reach.

addestra.com · The Four Mismatches Test. A single fail means it was built for a different system.

Independence: Addestra builds learning products too (MathsTutor, TinkerWell). We never review or score our own, 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.

The fit assessment

The scorecard above scores Doubtnut on the four axes on which exported EdTech fails to fit a local system — assessed for an Indian Tier-2/3 student (its home market). The verdict: Four passes for the vernacular, mobile-first Indian student the English-only imports never reach. For the full framework, see the Four Mismatches Test.

Where it sits

Doubtnut is on the EdTech AI 100 map, in exam prep & regional platforms, built in India.

Related & alternatives

Sources