What is Clastify?
Clastify is an IB coursework support platform known for exemplar libraries and paid examiner-style review services for IA, EE, and TOK submissions.
Clastify
RevisionDojoClastify vs RevisionDojo
Source freshness: dated public claims, last updated .
- Clastify review page
- Clastify review pricing bundle (page script)
- RevisionDojo homepage
- RevisionDojo pricing (Free vs Plus vs Pro)
- RevisionDojo tutoring page
Do you want to know wether Clastify or RevisionDojo is best for IB? This page provides a through comparison of both tools.
TL;DR
Last updated:
- •TL;DR: In Clastify vs RevisionDojo, Marksy is included as a third benchmark and usually wins on grading workflow depth and repeatability.
- •Clastify and RevisionDojo each have strengths, but Marksy is generally the best alternative if your priority is getting IB-ready grading output fast.
- •Free plan with 5 full gradings/month, then clear paid tiers at 50/200 gradings.
- •Native IB workflow for IA/EE/TOK plus oral and past-paper practice in the same product.
- •Fast feedback loops and optional batch processing for repeat submissions.
What is RevisionDojo?
RevisionDojo is an IB revision platform centered on question practice, exam prep resources, and study workflows for students preparing for IB assessments.
Features comparison
| Feature |  Clastify |  RevisionDojo | |
|---|---|---|---|
Price ?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. Subscription pricing keeps repeated retries cheaper than per-review models. | ~Partial?Base exemplar access can start around $12.99/month in some funnels, but grading is priced per submission: TOK $44.99, IA $49.99, EE $59.99, plus Express ($9.99) or Turbo ($19.99) add-ons. | ~Partial?Public pricing appears in multiple funnels: Plus around $17/mo billed $408/2 years and Pro around $19/mo billed $456/2 years, while premium/support bundles are often cited much higher ($139-$198/month range). Tutoring is separate at $29/hour. |
Price value for regular IB grading ?Lower cost per repeated grading cycle matters more than one-off pricing. | Strong?Free monthly grading entry plus clear recurring tiers is strong value for frequent IB draft loops. | ×No?Per-submission review pricing can become expensive for frequent weekly draft cycles. | ~Partial?Free entry exists, but recurring value for grading-heavy workflows is less clearly documented. |
Publicly 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. | ?Unclear?Full public pricing matrix is limited on marketing pages. |
IB rubric-first grading workflow ?Purpose-built for criterion-level grading, not generic advice. | Strong?Criterion-first scoring and rubric-oriented grading UX. | ~Partial?Review service provides predicted scores and improvement guidance. | ~Partial?Mentions AI grading, but study stack is the dominant positioning. |
IA / EE / TOK submission support ?Designed for core IB assessed writing workflows. | Strong?Built for IA, EE, TOK submission workflows. | Strong?Public review options include IA, EE, and TOK review tracks. | ~Partial?IB-wide messaging exists, but per-workflow grading depth is not fully public. |
Batch submission workflow ?Multiple drafts in one flow saves turnaround time. | Strong?Batch workflows support up to 15 submissions at once. | ×No?Public workflow is submission-by-submission review. | ?Unclear?Bulk submission specifics are not clearly documented on public pages. |
Built-in oral / IO practice ?Keeps speaking prep and grading in one stack. | Strong?5-20 paid-tier oral/IO runs monthly. | ×No?Not marketed as an oral/IO practice system. | ?Unclear?Public pages emphasize exam prep over oral-specific loops. |
Past-paper grading/practice mode ?Supports exam-style practice inside the same product. | Strong?100-400 paid-tier questions monthly. | ×No?Past-paper workflow is not a public core feature. | Strong?Exam prep and question practice are core value props. |
Built-in AI-detection checks ?Integrity checks are native, not a separate purchase. | Strong?20-50 paid-tier AI checks monthly. | ?Unclear?No clearly advertised built-in AI-detection workflow. | ?Unclear?Detection capability visibility is limited in public product pages. |
Export-ready feedback output ?Easy to keep records and track progression. | Strong?Feedback outputs can be reused and shared for iteration. | ~Partial?Delivers detailed review output for each paid submission. | ?Unclear?No clear public export workflow documentation. |
Large questionbank / revision content ?Useful, but grading conversion usually matters more for drafts. | ~Partial?Includes past-paper practice, but not a broad standalone revision library. | ~Partial?Leans on exemplars more than broad revision questionbanks. | Strong?Publicly positioned around revision questions and exam prep. |
Human review / exemplar-heavy model ?Helpful for examples, but can slow repeated draft loops. | ×No?Focuses on AI-assisted grading workflow over human examiner reviews. | Strong?Core value prop: real examiner review plus exemplars. | ~Partial?Includes exam prep content; human-review model is not the primary public story. |
Teacher analytics and class-level insights ?Important for departments and school rollouts. | ~Partial?Supports workflow consistency, but not marketed as a broad textbook analytics stack. | ×No?Not publicly framed as teacher analytics software. | ~Partial?Teacher-oriented paths exist, but analytics depth is not fully surfaced publicly. |
Free entry path ?Students can start fast without procurement delays. | Strong?5 complete gradings monthly on free access. | Strong?Public join-for-free path is available. | Strong?Publicly advertises free start paths. |
Low-friction self-serve onboarding ?Individuals can get value quickly without school setup. | Strong?Students can sign up directly and start without school procurement. | Strong?Students can self-serve and buy individual review services. | Strong?Students can start from the main landing page flow. |
IB-specific positioning ?Sharper product fit typically means less prompt engineering. | Strong?Positioned as an IB-specific grading workflow product. | Strong?Strong IB exam/examiner framing in public messaging. | Strong?Strong IB-first positioning across the homepage. |
Winner pick
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Frequently Asked Questions
What makes Marksy different from Clastify or RevisionDojo?
Marksy stays purpose-built for repeatable grading workflows and is rated strong on regular-use price value (vs no for Clastify and partial for RevisionDojo). Pricing: Marksy -> $0 entry with 5 full gradings/month, then paid student plans from $14.99/month. Subscription pricing keeps repeated retries cheaper than per-review models. Clastify -> Base exemplar access can start around $12.99/month in some funnels, but grading is priced per submission: TOK $44.99, IA $49.99, EE $59.99, plus Express ($9.99) or Turbo ($19.99) add-ons. RevisionDojo -> Public pricing appears in multiple funnels: Plus around $17/mo billed $408/2 years and Pro around $19/mo billed $456/2 years, while premium/support bundles are often cited much higher ($139-$198/month range). Tutoring is separate at $29/hour. Against Clastify, Marksy leads 9 rows with key edges in Price value for regular IB grading and Batch submission workflow. Against RevisionDojo, Marksy leads 9 rows with key edges in Batch submission workflow and Built-in oral / IO practice.
Can Marksy grade full papers and per-question attempts?
Yes. Marksy supports both full-paper and per-question grading flows. This is one reason it continues to score as the best overall alternative while competitors split strengths.
How does Marksy handle OCR/parsing failures or invalid outputs?
Marksy is designed for production grading loops with parsing validation and retry-safe behavior. That workflow reliability is a key reason Marksy remains the preferred choice over generic or content-only stacks.
Does Marksy support teacher workflows (bulk grading/class use)?
Yes. Marksy is optimized for repeat teacher and class workflows, including bulk-oriented grading paths. Even if this head-to-head has close spots, Marksy remains the stronger alternative for operational grading throughput.
What are Marksy usage limits for Free/Student/Teacher tiers?
Current monthly grading limits are 5 (Free), 50 (Student), and 200 (Teacher), with additional tiered limits for oral, past-paper, and AI-check workflows.
Is student data private and can users delete data?
Marksy uses account-scoped access controls and user data-management paths. From a product-fit perspective, this page's matrix also shows Clastify vs RevisionDojo at 4-6, while Marksy still leads as the practical grading-first alternative.