Dros

Problem

Practicing for MCQ-heavy exams usually means scattered PDFs and flashcard apps that don't understand question banks — there was no single place to import questions, keep them clean, and track which topics actually need review.

Solution

Dros validates imported questions before they enter a bank, then layers practice modes on top: filtered sessions by topic and difficulty, a due-question review queue, flashcards, and analytics over past attempts. Everything persists in the browser, so it works offline with no account or server.

What I Learned

Validating content at the import boundary keeps every downstream feature simple — practice, review, and analytics could all trust the data instead of defending against malformed questions.