Frequently asked questions

Yes. Every MCQ practice test, explanation, level and progress feature is free, and the site is supported by ads.

Yes. Easy questions work without signing up. A free account saves your answers, progress, XP and streak, and lets you unlock medium and hard questions.

Sign in, then answer at least 10 easy questions in a subject with 60% or more correct to unlock medium. Do the same on medium to unlock hard. If a level has fewer than 10 questions, answer all of them with 60% or more correct.

282 subjects with 44,152 questions, in categories such as Content Writing & Translation, Organizational Studies & Business Operations, and Business Growth & Marketing. Browse them all on the Practice page or search by name.

Questions are grouped into categories, then subjects, and each question is easy, medium or hard. Interview questions are grouped by technology.

Right after you choose an option. You see whether you were right, which option is correct and an explanation of why.

A certificate that shows the subject, the level and your accuracy, which you can share on LinkedIn, plus 50 bonus XP.

Each correct answer earns 10 XP and each wrong one 2 XP. Practising on consecutive days builds a streak, and your first practice of each day adds 5 bonus XP for every day of the streak. Your XP sets your level.

Regularly. New subjects and questions appear on their practice page as soon as they are published.

Technical interview questions for each technology. Every question has a short answer you can say in an interview and a full answer that explains it, with code where it helps.

You can read a few full answers without signing in. The paid plan gives full access to the interview questions for every technology.

Choose your interview date and up to 10 technologies. The questions you haven't read or marked as known are spread over the days left, with the last day kept for revision when you have at least three days.

Spaced review. Questions you have read come back at growing intervals, and "Your 5 for today" lists the ones that are due, so you revise them before you forget.

Yes. Practice mode hides each answer until you tap to reveal it, and you can mark every question as "I know this" or "Revise later".

Yes. Every email has a one-click unsubscribe link, and you can choose which emails you get on the email settings page.

Click Sign Up and register with your email address (we send a link to confirm it), or continue with your Google account.

On the sign-in page, click Forgot your password and enter your email address. We'll send you a link to set a new one.

Yes. In your account settings you can change your name, email address and password, or delete your account.

Your dashboard and Progress page show the questions you've answered, your accuracy, XP, level and streak, and your certificates are listed on the Certificates page.

Full access to the interview questions for every technology, with short and full answers, the interview plan, spaced review and reminder emails. MCQ practice stays free.

The available payment methods are shown at checkout, and payments are handled by our payment provider. For billing questions, email contact@testlabapp.com.

Refunds for the paid interview plan follow our Terms of Service. Email contact@testlabapp.com if you're not satisfied with your purchase.

Yes. Every page works on phones, tablets and computers, and your progress is saved to your account, so you can switch devices.

Current versions of Chrome, Firefox, Safari and Edge.

Connections to TestLab are encrypted (HTTPS), passwords are stored hashed, and we don't sell your personal information. The Privacy Policy explains what we keep and why.

Email contact@testlabapp.com with the subject and the question, and we'll check and fix it.