Frequently Asked Questions

CodinzHub is a premium coding interview preparation platform designed to help developers crack online assessments (OA) and technical interviews at top tech companies like Google, Meta, Amazon, Uber and more.

Yes. Our questions are curated from recent real-world online assessments and interview experiences shared by candidates and the community, so you practice with relevant, up-to-date material. Browse them on the questions page.

Yes. Many problems include detailed editorials, optimal approaches, time/space complexity analysis and code solutions to help you learn patterns - not just memorize answers.

Many parts of CodinzHub are free. Browsing questions, interview experiences and projects is open to everyone, while unlocking full premium content (question details, resume reviews) uses coins - free in-app credits you earn by signing up, referring friends and contributing.

Our question bank is updated regularly as new interview experiences and online assessment patterns emerge from the community. New OA questions, interview experiences and projects are added every week during hiring season.

Coins are CodinzHub's in-app credits. You spend them to unlock premium content such as coding questions and resume reviews. Interview experiences and projects are free to open by default. Every new account starts with a free welcome coin balance, and you can see your balance and full coin history on your dashboard.

There are three main free ways to earn coins: (1) Refer friends with your personal invite link from your dashboard, (2) Contribute OA questions or interview experiences via the contribute page - approved contributions earn coins, (3) Answer assessment requests from other members on the requests page.

Open your dashboard and copy your unique referral link from the Refer & Earn card. When someone creates an account through that link, coins land in your wallet once their signup is verified. There is no cap on how many friends you can invite, and a referral code can also be entered on the signup form.

Yes. Head to the requests page and raise a request for a specific company's OA or interview round. Raising a request costs a small coin fee which funds the reward for whoever fulfils it, and you get notified once another member answers it.

CodinzHub is currently open to college students, so accounts are created against a college email domain. Sign up with your official college address (for example user@iitbhu.ac.in). If your college uses a different domain and you still see the error, contact us at support@codinzhub.com and we will get your institute added.