Every answer and concept.
Six months. One payment.

Signed-in accounts can read up to 150 question bodies and 120 concept bodies per hour, including Premium accounts. Reopening the same item within 60 seconds uses its existing allowance. A limit message shows when to try again; access resumes when the window resets.

No. You pay once and get six months. Nothing is stored, nothing recurs, and there is no cancellation to remember.

Ask, and we push the date out. If your interview sits just beyond the six months, say so on the contact page and your access gets extended past the interview, free. The same applies to anything else that has gone wrong: a payment that misbehaved, access that never opened, an answer you believe is mistaken. Every message is read by a person.

You drop back to the free tier. Progress, bookmarks and the open answers all stay where they are, and buying another six months is something you choose to do rather than something that happens to you.

Three ways: $25 by card, through Razorpay; $25 through PayPal; ₹2,000 by UPI, card or netbanking, through Razorpay. All of them open the same thing, so pick whichever is least trouble where you are. The provider handles sensitive payment credentials. Access attaches to your Google account after server confirmation.

Yes, eighteen of them per topic, in full. Same diagrams, same code, same follow-ups as the paid ones. Judge the writing before spending anything on it.

There are none. Paying opens the entire bank in the same instant, so there is nothing to return. That is exactly why eighteen answers per topic are open first: read those, at the same standard as everything behind the wall, and only pay if it is obviously worth it to you.