What is 99cards.dev?
A flashcard-based interview prep app that helps web developers learn faster and remember more. It uses spaced repetition and active recall to turn weak spots into strengths, with short quizzes, instant explanations, and progress tracking. The app covers frontend, backend, full‑stack, databases, Git, and performance topics across 24 categories and 4,900+ questions. Offered as a one-time annual or lifetime purchase, it includes bonus playbooks, a 30-day money-back guarantee, and guidance to practice 20–25 minutes daily to see real interview improvements.
Key features
- Uses spaced repetition flashcards to lock concepts into long-term memory.
- Interactive quizzes with instant feedback and clear explanations for answers.
- Tracks progress and highlights strengths and weaknesses with color indicators.
- Covers 24 web technologies and over 4,900 practical questions.
- Designed for short, focused sessions of 20–25 minutes daily.
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Founder
Rustam Guseynov