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Learn what actually happens behind the code
Foundations is free in every track, along with practice and interview prep. Pro unlocks the Core, Advanced and Expert levels and keeps the writing independent and ad-free.
Free
$0forever
- The Foundations level of every track
- Practice problems and interview questions
- Articles, traces, videos and request flows
- Progress and bookmarks across devices
- The weekly technical newsletter
Payments are processed securely by our payment providers.
Questions
- Can I cancel anytime?
- Yes. Cancel from your account in two clicks. Stripe subscriptions use the billing portal; Razorpay subscriptions are canceled by support when you ask. You keep access until the end of the period you paid for and are never charged again.
- Do you offer refunds?
- Yes — if the membership isn't for you, ask within 14 days of your first payment for a full refund. See the refund policy for details.
- What stays free?
- The Foundations level of every track, the practice problems and interview questions, and the rest of the library. Members-only items are marked, and bookmarks, progress and the newsletter are free with an account.
- How do payments work?
- Checkout is handled by Stripe for USD, EUR, GBP, CAD and AUD, and by Razorpay for INR (UPI, cards and netbanking). We never see or store your card number. Receipts and invoices are emailed automatically, and Stripe customers can download them from the billing portal.
- Student, team or regional pricing?
- Email us — we're happy to help students, teams and readers in regions where the price is a barrier.
Read the terms, refund policy and privacy policy.