We use a rigorous 2-step process: grades are first verified using official IB result screenshots, and then confirmed by IB-certified examiners when exemplars are marked. Grades are clearly labelled as partially or fully verified. Learn more

No. All our mark schemes are created by human IB examiners. AI might sometimes be used to fix typos, improve tone, etc. but never for actual marking or assessment. Because of that the comments might sometimes seem AI generated. Learn more

If you notice an issue, please contact us. Include the link to the exemplar and the reason for reporting. For DMCA and other copyright-related issues, please visit our Copyright Claims & Takedown Requests page.

AI Comparisons are a feature that allows you to compare your coursework with a chosen exemplar. Our AI marks your work and shows you the similarities and differences between your work and the exemplar, while highlighting the areas where you need to improve.

Unfortunately, we can't really predict when exactly a subject will become available again. In most cases, it's 12h-48h. We recommend signing up for our waitlist (available on the Review Upload Form) to get notified once the subject becomes available again.

It depends on the delivery option you selected at checkout. Turbo Delivery: within 24 hours. Express Delivery: within 36 hours (business days only). Standard Delivery: within 72 hours (business days only).

All our examiner reviews and marking are done by human IB examiners. AI might sometimes be used to fix typos, improve tone, etc. but never for actual marking or assessment. Because of that the comments might sometimes seem AI generated. Learn more

Sometimes delivery options might be unavailable if our reviewers are already full and are unable to deliver your review on that specific date.

If a subject is not present in the dropdown list that means we do not offer reviews from it. Please do not upload works for subjects we do not offer as we will not be able to review them.

We're constantly working to add new subjects. Unfortunately, we're often not able to predict when exactly a subject will be added as that depends on the demand and reviewer availability.

Please contact us immediately and let us know that you'd like to change the delivery. Make sure to specify the delivery type you'd like your order to be changed to. Our Team will confirm if a faster delivery is possible and will get back to you right away.

You can update your document only if the reviewer hasn't started working on it yet. Please contact us immediately with the new file attached, and we will try to swap it for you.

You can update your document only if the reviewer hasn't started working on it yet. Please contact us immediately with the new file attached, and we will try to swap it for you.

Blurred sections indicate that you have reached the weekly limit of your free plan. To unlock unlimited AI access and view full results, please upgrade to Pro.

AI is a powerful tool for instant feedback on grammar, structure, and general criteria. However, it cannot replace the nuance and expertise of a human examiner. For an accurate grade prediction and detailed commentary on your arguments and logic, we highly recommend getting an Examiner Review before your final submission.

Yes! Our RQ Generator was trained on thousands of high-scoring IB exemplars, and the ideas it generates are designed to align with IB criteria, helping you develop research questions that meet the standards.

The RQ Evaluator was trained on thousands of research questions marked by IB-certified examiners. It evaluates your research question using the same IB criteria, helping you understand its strengths and areas for improvement.

Clastify Pro is perfect for power users who want the most out of Clastify: full exemplar guides, unlimited Clai messages, AI Comparisons, research question tools, and higher download limits. Premium is enough for occasional browsing, but Pro unlocks the full experience. Contact us if you’re unsure which plan suits you.

Premium gives full access to exemplars, mark schemes, comments, downloads, and no ads. Pro goes further: it includes all Premium features plus AI tools, detailed exemplar guides, extra downloads, and monthly AI Comparisons to supercharge your learning.

We generate invoices manually. Please click below to request a PDF copy via our support form.

Currently, the exact renewal date is not visible in your account settings. To check when your plan expires or renews, please contact our support team, and we will verify it for you immediately.

No, subscriptions are intended for individual use only and cannot be shared with others. Each account must have its own active subscription.

You can cancel anytime in your settings to stop future billing.

You can permanently delete your account in your profile settings. Go to Profile Settings

You can update your username in your profile settings. Go to Profile Settings

For security reasons, email addresses cannot be changed directly in the profile settings. Please contact our support team and provide the new email address you would like to use. Make sure that no Clastify account already exists under that email, as each email can only be linked to a single account.

If you’ve forgotten your password, go to the login page and click the "Forgot Password" button to reset it. If you run into any issues, please contact our support team for assistance

Clastify for Schools allows schools to purchase our resources for their students and teachers. We offer discounts for schools that purchase in bulk as well as priority support, dedicated workshops, and more.

Clastify is not restricted to specific subjects. Our subscription unlocks access to all subjects without any limits.

The cost of a school subscription depends on the number of students and teachers. Please contact us to get a custom quote.

Yes. We offer onboarding with a dedicated success manager and guided walkthroughs for teachers and coordinators.

We're always looking for passionate IB examiners to join our team. If you're interested in becoming a tutor or reviewer, please contact us.

If you're interested in partnering with Clastify, please contact us.