Doubtnut Acquired

A student photographs a problem and receives a short video walking through the solution.

Solutions delivered in students' local languages, not just English/Hindi.

Machine-learning-based math image recognition identifies the problem from a photo.

Students getting help with math and science problems.

Aspirants preparing for IIT JEE and BITSAT alongside board-exam students.

The bulk of usage comes from smaller cities and state-board (vernacular) students outside India's largest metros.

Students self-serve by photographing a question in the app; there is no live-tutor step in the core loop before an answer video is returned.

Primary product surface for photographing and submitting doubts.

Web version of the doubt-solving product.

Students can share a doubt photo over WhatsApp.

Solution videos also distributed via YouTube channels.

Doubtnut's answer videos are prepared by subject experts from IIT and other institutions, who act as an aid to its teaching staff.

Core operations center on using AI to decipher a photographed question and automatically serve the matching video solution from its library.

Doubtnut built a solved-question database spanning nine languages, covering sixth grade through high school, that underpins its instant video-answer product.

Doubtnut was founded by IIT-Delhi alumni Tanushree Nagori and Aditya Shankar.

A large, highly engaged active user base is a core asset behind Doubtnut's scale and its appeal as an acquisition target.

Allen Career Institute acquired Doubtnut in 2022, absorbing the AI-led doubt-solving platform to extend its reach with students beyond Allen's own coaching base.

Hong Kong-based SIG Investments and James Murdoch's Lupa Systems co-led Doubtnut's Series B, with existing investors Sequoia Capital India, Omidyar Network India and Waterbridge Ventures also participating.

Japanese mobile-gaming company Akatsuki Inc was among the backers of Doubtnut's 2019 funding round, alongside Sequoia, Waterbridge Ventures and Omidyar Network.

One of Doubtnut's early investors first connected with founders Aditya Shankar and Tanushree Nagori through an accelerator program supported by Village Capital in 2017.

As of its 2021 Series B, Doubtnut's core product was free to use, with paid courses identified as a planned monetization path.