IB Diploma Study Tools
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Grade your TOK essay and IAs against the actual IB rubric. Generate subject-specific flashcards. Plan revision for both years. Used by IB students across India and internationally.
Start free — no card needed → ✏️ Essay GraderTools built around the IB assessment framework
Most study apps are built for standardised tests or don't understand the IB's criterion-referenced marking. Horizon AI is different — every tool is aligned to how the IB actually marks work.
Essay Grader
Upload your TOK essay, History IA, or English A Paper 2 response. Get instant feedback against the official IB marking criteria — overall score, criterion-by-criterion breakdown, and the top 3 things to fix.
IA Writing Assistant
(Elite) An AI assistant that helps you develop arguments, check your RQ against the IB's scope requirements, and suggest evidence — without writing the essay for you.
Subject Flashcards
Generate IB-level Q&As from any chapter. Command terms (analyse, evaluate, discuss), mark allocations, and higher-order thinking — not just definitions.
Notes Summariser
Paste your class notes, a chapter, or a source — get a structured summary with key themes, arguments, and essay-ready quotes pulled out.
Revision Planner
Build a revision plan around your actual May or November exam schedule. Covers both HL and SL subjects, IA deadlines, and the TOK presentation timeline.
Citation Generator
Properly formatted citations for IB Extended Essays and IAs. Chicago, MLA, APA — the IB accepts all three. Get them right every time.
Graded against the actual IB rubric
Our essay grader doesn't check grammar. It checks what IB examiners actually check — criterion-by-criterion, with the same assessment language the IB uses.
TOK Essay (45 marks → 10 marks scaled)
Understanding the Knowledge Question
Does the essay clearly identify and explore the KQ? Is the scope appropriate? Are AoKs and WoKs correctly applied?
Quality of Analysis and Argumentation
Are knowledge claims supported by specific, relevant examples? Is the reasoning clear and logically consistent?
Awareness of Perspectives and Implications
Does the essay consider counter-arguments? Are different cultural, disciplinary, or personal perspectives acknowledged?
Use of Examples
Are examples specific and well-chosen? Do they genuinely illuminate the KQ, or are they superficial?
Structure, Clarity, and Focus
Is the essay well-organised? Does it stay focused on the KQ throughout?
Paste your essay → select assessment type → the AI applies each criterion with a band descriptor and explains why you scored where you did. Then it lists the three highest-impact changes you can make.
Guides for every IB assessment
TOK Essay Guide
Knowledge questions, essay structure, prescribed titles analysis, and how to use our AI grader to go from draft to final submission.
History IA Guide
Section-by-section breakdown of the IA structure, IB marking criteria, source evaluation tips, and common mistakes examiners flag.
Extended Essay Guide
From choosing a research question to structuring a 4,000-word argument. Includes the 9-month timeline that works.
Essay Grader — Full Details
How the grader works, which assessments it covers, scoring breakdown, and how it compares to paying a tutor ₹1,500/hour for the same feedback.
Grade your TOK essay or IA in 60 seconds
Criterion-by-criterion feedback against the actual IB rubric. Free tier available — no card needed.
Try the essay grader free →