What is Marksy?
Marksy grades IA, EE, TOK, and other IB drafts. It also offers oral practice, source checking, online textbooks, and simulations.
ClastifyMarksy vs Clastify
Source freshness: dated public claims, last updated .
Do you want to know wether Marksy or Clastify is best for IB? This page provides a through comparison of both tools.
TL;DR
Last updated:
- •TL;DR: Marksy is the stronger Clastify alternative when you mainly need fast, consistent feedback on IB drafts.
- •Clastify can be useful for its main job, but Marksy is more focused on turning a draft into a predicted mark, comments, and clear fixes.
- •Free plan with 5 full gradings/month, then clear paid tiers at 50/200 gradings.
- •Grade IA, EE, and TOK drafts, practise orals, and check sources from the same account.
- •Fast feedback and optional batch uploads make it easier to check more than one draft.
What is Clastify?
Clastify is known for IB example work and paid examiner-style reviews of IA, EE, and TOK submissions.
Features comparison
| Feature |  Clastify | |
|---|---|---|
| General | ||
IB oriented ?IB-specific tools need less setup than a blank chat box. | Strong?Made specifically for grading and improving IB work. | Strong?Strong IB exam/examiner framing in public messaging. |
Affordable ?Shows what users actually pay, including per-review and billed-total caveats. | Strong?$0 entry with 5 full gradings/month, then paid student plans from $14.99/month. | ~Partial?Base access can start around $12.99/month, with per-submission review pricing (TOK $44.99, IA $49.99, EE $59.99). |
Has free tier ?Students can start immediately without procurement or upfront payment. | Strong?5 complete gradings monthly on free access. | ~Partial?Has free tier but very limited. |
Transparent pricing ?Lower uncertainty at evaluation time. | Strong?Public monthly pricing with free, student, and teacher tiers. | Strong?Public review pricing is visible for IA/EE/TOK review offerings. |
| Coursework grading | ||
IA / EE / TOK grading support ?Made for IAs, Extended Essays, TOK, and other IB coursework. | Strong?Grades IA, EE, and TOK drafts. | Strong?Public review options include IA, EE, and TOK review tracks. |
Marks by criterion ?Criterion-by-criterion marks and feedback, not generic advice. | Strong?Shows estimated marks and feedback for each assessment criterion. | Strong?Review service provides predicted scores and criterion-linked improvement guidance. |
AI detection ?Integrity checks are native, not a separate purchase. | Strong?20-50 paid-tier AI checks monthly. | ×No?No built-in AI-detection check is advertised. |
Specific tips ?A clear list shows students what to fix first. | Strong?Pairs comments with a short list of changes to make next. | ×No?Specific comments come mainly through each paid review. |
Quick ?Fast feedback leaves time to edit and check another version. | Strong?Fast feedback leaves time to edit and check another version. | ×No?Human examiner review can take longer than instant AI-first loops. |
Human review ?Human review can help edge cases but usually adds time and cost. | ×No?Uses AI feedback rather than a human examiner review. | Strong?Core value prop: real examiner review plus exemplars. |
Good price for grading drafts ?The cost of checking several drafts matters more than one review. | Strong?Subscription pricing keeps repeated retries cheaper than per-review models. | ×No?Per-submission review pricing can become expensive for frequent weekly draft cycles. |
| Textbooks and simulations | ||
Online textbooks ?Useful for understanding a topic before working on coursework. | Strong?Includes online textbook chapters as well as draft grading. | ×No?No online textbook product is offered. |
Hundreds of simulations to learn concepts ?Interactive simulation depth improves understanding before drafting. | Strong?Public simulations hub includes hundreds of IB learning simulations. | ×No?No public simulations library is positioned. |
Available for free ?Free learning content removes friction for everyday revision. | Strong?Core simulation and revision resources are publicly accessible. | ~Partial?Some resources are accessible with free accounts; detailed reviews are paid. |
| Oral practice | ||
Practice and get feedback ?Oral practice should include structured scoring feedback. | Strong?Built-in oral practice returns feedback after each attempt. | ×No?Not marketed as an oral/IO practice system. |
Affordable oral practice ?Predictable oral-practice costs matter when students rehearse frequently. | Strong?Oral practice is included in plan limits, not charged per attempt. | ×No?No oral practice feature is advertised. |
| Questionbank | ||
Practice IB questions ?Question practice is valuable when linked to criterion-aware feedback. | ×No?No first-party questionbank is publicly offered by Marksy. | ×No?No dedicated IB question-practice bank is provided. |
| Teacher features | ||
Grade assessments in large batches ?Batch grading throughput matters for teacher workloads. | Strong?Bulk grading supports up to 15 submissions at once. | ×No?Reviews are bought one submission at a time. |
Export grading results in bulk ?Exportable outputs simplify moderation and record-keeping. | Strong?Feedback outputs can be reused and shared for iteration. | ~Partial?Delivers detailed output per submission, but no public bulk export flow. |
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Frequently Asked Questions
Can Clastify grade IB/GCSE/A-Level responses accurately?
It can help with some parts of grading. In this comparison, Marksy leads 13 feature rows and Clastify leads 1. Marksy's clearest strengths are Specific tips, Good price for grading drafts, and Practice and get feedback, so it is the better choice for checking several drafts.
Does Clastify use structured or generic AI feedback?
Clastify is rated strong for marks and comments by criterion based on its public site, while Marksy is rated strong. Choose Marksy if you want that report without writing a long prompt first.
Can Clastify grade handwritten scans/PDF uploads?
Clastify does show strengths in Human review. For marking uploaded work and getting clear, useful feedback each time, Marksy is still the better choice in this comparison.
Can Clastify give criterion-by-criterion score breakdowns (not just one score)?
Clastify is rated strong for structured feedback, while Marksy is rated strong. If criterion-by-criterion breakdown quality is your main requirement, Marksy is generally the better fit.
Is Clastify cheaper than Marksy for regular practice?
Clastify is rated no for assessment-grading price value and strong for pricing transparency. Pricing: Base access can start around $12.99/month, with per-submission review pricing (TOK $44.99, IA $49.99, EE $59.99). Marksy snapshot: $0 entry with 5 full gradings/month, then paid student plans from $14.99/month. Marksy is rated strong on long-run value because repeated IB draft retries do not require per-review payments.