Compare 7 popular IB websites
Choose the job you need help with—coursework grading, revision, textbooks, oral practice, or question banks—then compare what each site actually offers.
Detailed comparisons
What does each site do?
A short explanation of what each IB site is mainly used for.
What is Marksy?
Marksy grades IA, EE, TOK, and other IB drafts. It also offers oral practice, source checking, online textbooks, and simulations.
What is RevisionDojo?
RevisionDojo offers IB question practice, exam preparation, study resources, and coursework tools.
What is Clastify?
Clastify is known for IB example work and paid examiner-style reviews of IA, EE, and TOK submissions.
What is Revision Village?
Revision Village focuses on IB question banks, worked solutions, and past-paper-style practice for core subjects.
What is Save My Exams?
Save My Exams provides revision notes, topic questions, and past-paper-style study materials for IB and other exam boards.
What is Kognity?
Kognity provides digital IB textbooks, classroom assignments, and progress data for schools, teachers, and students.
What is ChatGPT?
ChatGPT is a general-purpose AI assistant used for writing and study support across many domains, including IB tasks when configured with user prompts.
Feature comparison table
Compare the same features across every site. The Marksy column is highlighted so it is easy to find.
| Feature | RevisionDojo | Clastify | Revision Village | Save My Exams | Kognity | ChatGPT | |
|---|---|---|---|---|---|---|---|
| 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-first positioning across the homepage. | Strong?Strong IB exam/examiner framing in public messaging. | Strong?IB exam prep is the core market positioning. | ~Partial?Supports IB, but also serves multiple exam boards. | Strong?Explicit IB DP product positioning and collaboration claims. | ×No?General assistant, not IB-specific by default. |
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. | ×No?Public premium pricing is high at about $198/month for full access, so it is not affordable for most students. | ~Partial?Base access can start around $12.99/month, with per-submission review pricing (TOK $44.99, IA $49.99, EE $59.99). | ×No?Public Gold snapshots include subject plans at $70 monthly and higher full-suite plans. | ~Partial?Offer-led pricing varies by region and promo with multiple monthly and annual anchors. | ×No?No fixed self-serve public sticker price; schools are usually quoted custom annual contracts. | ~Partial?Free tier is available, with paid plans publicly listed around Plus ($20/month) and Pro ($200/month). |
Has free tier ?Students can start immediately without procurement or upfront payment. | Strong?5 complete gradings monthly on free access. | ×No?Has free tier but very limited. | ~Partial?Has free tier but very limited. | ~Partial?Open-study access exists with premium membership upsell. | Strong?Public free-join entry path is available. | ~Partial?Free access trial path exists, but full use is school subscription-led. | Strong?Public free plan exists with paid upgrades for higher limits and models. |
Transparent pricing ?Lower uncertainty at evaluation time. | Strong?Public monthly pricing with free, student, and teacher tiers. | ×No?Prices fluctuate a lot, and is in constant discount despite being advertised as time limited. | Strong?Public review pricing is visible for IA/EE/TOK review offerings. | Strong?Membership and plan framing is publicly visible. | ?Unclear?Pricing clarity is inconsistent across funnels, so transparency remains unclear. | ?Unclear?Pricing is per-student per-year but final costs are quote-based. | Strong?Public plan structure (Free/Plus/Pro/Business/Enterprise) is listed. |
| 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?Paid plans advertise IA, EE, and TOK grading. | Strong?Public review options include IA, EE, and TOK review tracks. | ×No?Dedicated IA, EE, and TOK grading is not advertised. | ×No?Dedicated IA, EE, and TOK grading is not advertised. | ×No?Dedicated IA, EE, and TOK grading is not advertised. | ~Partial?Can discuss many task types, but each one needs the right prompt. |
Marks by criterion ?Criterion-by-criterion marks and feedback, not generic advice. | Strong?Shows estimated marks and feedback for each assessment criterion. | ~Partial?Structured feedback is available but limited to paid tiers. | Strong?Review service provides predicted scores and criterion-linked improvement guidance. | ×No?Focused on practice content rather than grading student drafts. | ×No?Public value proposition is revision content over coursework grading. | ×No?The public site does not clearly show marks by coursework section. | ~Partial?Can grade with prompts, but IB rubric fidelity depends on user setup. |
AI detection ?Integrity checks are native, not a separate purchase. | Strong?20-50 paid-tier AI checks monthly. | Strong?Paid grading plans include AI-detection checks. | ×No?No built-in AI-detection check is advertised. | ×No?No public built-in AI-detection feature positioning. | ×No?No public AI-detection product positioning. | ×No?No public AI-detection check is advertised. | ×No?No first-party academic AI-detection checker in ChatGPT product flows. |
Specific tips ?A clear list shows students what to fix first. | Strong?Pairs comments with a short list of changes to make next. | ×No?The public site does not clearly show a consistent list of specific fixes. | ×No?Specific comments come mainly through each paid review. | ×No?No dedicated list of draft-specific fixes is advertised. | ×No?No dedicated list of draft-specific fixes is advertised. | ×No?No dedicated list of draft-specific fixes is advertised. | ×No?Students must prompt it to return a useful list of specific fixes. |
Quick ?Fast feedback leaves time to edit and check another version. | Strong?Fast feedback leaves time to edit and check another version. | Strong?Core paid flows are positioned around fast turnaround for iterative student feedback. | ×No?Human examiner review can take longer than instant AI-first loops. | ×No?Speed claims focus on exam practice rather than grading IA, EE, or TOK drafts. | ×No?Not positioned as a quick grading-feedback product. | ×No?Not positioned as a quick grading-feedback product. | Strong?Most text responses appear immediately. |
Human review ?Human review can help edge cases but usually adds time and cost. | ×No?Uses AI feedback rather than a human examiner review. | ×No?A human grading review is not a main advertised feature. | Strong?Core value prop: real examiner review plus exemplars. | ×No?Not positioned as a human examiner review service. | ×No?Not a human-review submission service. | ×No?Not positioned as an examiner-review marketplace. | ×No?Not an examiner review marketplace. |
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?Premium plans are expensive if you mainly want to grade drafts. | ×No?Per-submission review pricing can become expensive for frequent weekly draft cycles. | ×No?Pricing is built around revision content rather than grading drafts. | ×No?Pricing is for revision content rather than grading coursework drafts. | ×No?School-led annual contracts can be heavy for individual grading-focused use. | ×No?The subscription is not priced specifically for grading coursework. |
| Textbooks and simulations | |||||||
Online textbooks ?Useful for understanding a topic before working on coursework. | Strong?Includes online textbook chapters as well as draft grading. | Strong?Supports online subject notes and revision resources. | ×No?No online textbook product is offered. | ×No?No online textbook product is offered. | Strong?Revision notes, exam questions, and topic tests are public feature pillars. | Strong?Digital IB textbook and classroom content are core pillars. | ×No?No official IB textbook or revision library bundled by default. |
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 simulation library positioned as a core feature. | ×No?No public simulations library is positioned. | ×No?No public simulation library is a core product pillar. | ×No?No public simulations library positioned as a core offer. | ~Partial?Interactive learning resources exist, but a simulations count is not clearly public. | ×No?No built-in simulation library for IB concept learning. |
Available for free ?Free learning content removes friction for everyday revision. | Strong?Core simulation and revision resources are publicly accessible. | ~Partial?Free content exists, but textbook access is limited. | ~Partial?Some resources are accessible with free accounts; detailed reviews are paid. | ~Partial?Some open-study access exists before premium membership upgrades. | ~Partial?Free access exists, with deeper revision access behind paid plans. | ×No?Trial access exists, but full textbook access is subscription-led. | ×No?Study support is chat-based, not free textbook content delivery. |
| Oral practice | |||||||
Practice and get feedback ?Oral practice should include structured scoring feedback. | Strong?Built-in oral practice returns feedback after each attempt. | Strong?Paid plans include oral practice with feedback. | ×No?Not marketed as an oral/IO practice system. | ×No?Not publicly positioned as an oral-practice feedback product. | ×No?No public oral or IO feedback feature is advertised. | ×No?Not publicly positioned around oral/IO practice loops. | ~Partial?Can simulate an oral, but the student must set up the IB format in the prompt. |
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?Oral-practice pricing is not affordable given limited structured support. | ×No?No oral practice feature is advertised. | ×No?No oral practice feature is advertised. | ×No?No oral practice feature is advertised. | ×No?No oral practice feature is advertised. | ×No?Oral practice is possible, but no ready-made IB oral setup is included. |
| Questionbank | |||||||
Practice IB questions ?Question practice is valuable when linked to criterion-aware feedback. | ×No?No first-party questionbank is publicly offered by Marksy. | Strong?Question practice is a core value proposition. | ×No?No dedicated IB question-practice bank is provided. | Strong?Strong IB questionbank and markscheme/video-solution coverage. | Strong?Publicly positioned around exam questions and topic tests. | Strong?Publicly advertises a 10,000+ question bank and auto-corrected assignments. | ×No?No official IB questionbank library bundled by default. |
| Teacher features | |||||||
Grade assessments in large batches ?Batch grading throughput matters for teacher workloads. | Strong?Bulk grading supports up to 15 submissions at once. | ?Unclear?Bulk submission specifics are not clearly documented on public pages. | ×No?Reviews are bought one submission at a time. | ×No?No public bulk submission grading feature is advertised. | ×No?No public bulk grading feature is advertised. | ~Partial?Assignments are managed through a school or class account. | ×No?Public product is not a batch grading pipeline. |
Export grading results in bulk ?Exportable outputs simplify moderation and record-keeping. | Strong?Feedback outputs can be reused and shared for iteration. | ?Unclear?The public site does not clearly explain bulk result exports. | ~Partial?Delivers detailed output per submission, but no public bulk export flow. | ×No?No public grading-result export feature is advertised. | ×No?No exportable coursework-grading reports are advertised. | ~Partial?Teachers can manage classroom assignments and progress data. | ×No?No structured bulk export of grading results by default. |
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