Snap your mistakes. We do the rest.

Take a photo of a problem you got wrong. The AI reads it, sorts it by type, verifies the answer and writes an explanation. CSAT, Korean civil service exams, TOEIC and English vocabulary.

1. Photograph your workbook: problem pages, answer and explanation pages and word lists all work. The photo is deleted right after it is read.

2. The AI reads and sorts it: it transcribes the text and tags the type according to the exam guidelines. An answer key, if you have one, comes first.

3. It double-checks the answer and explains: it solves the problem, then re-checks why each choice is right or wrong.

4. Retry and see your weak spots: choices are reshuffled and problems come back when you are about to forget them. See which types you miss more often than others.

The problems you photograph are visible only to you. Free during the beta: 20 photos a day, and AI explanations free for the first 20 problems. Try it without signing up.