QANDA

QANDA is an AI-powered learning app built around a camera-based math and science problem solver, developed by the South Korean edtech company Mathpresso. Founded in 2015 and headquartered in Seoul, it operates on a freemium model: students photograph a homework problem and the app uses OCR and AI to return step-by-step solutions and concept explanations.

Beyond the automatic solver, QANDA adds a conversational AI tutor, a calculator, a community forum, a study timer, and a 1:1 Tutor Q&A feature that connects students with human tutors for specific questions. Coverage spans math plus science, English, and other subjects. The product is heavily international: roughly 90% of users are outside Korea, with strong presence across Japan, Vietnam, Indonesia, Thailand, and Singapore, and availability in 50+ countries.

QANDA is free for core features, with premium subscriptions reported around $1.29/month after a free trial; human 1:1 tutoring and advanced content sit behind paid tiers. Mathpresso has raised over $105 million and reports on the order of 90 million registered users. It suits K-12 and exam-prep students who want instant homework help and is especially strong in Asian markets.