Everything a real tutor does.
Just at the speed of software.

The tutor watches every signal — and changes course.

Four overlapping layers run on every interaction: misconception detection, mastery scoring, frustration sensing, and pace calibration. The session you start at 4pm is different from the one you'd have had at 9am.

• Real-time misconception diagnosis — not just right/wrong
• Bayesian mastery scoring per topic, per student
• Frustration detection from hesitation, hint use, retries
• Pace recalibration every 3–5 turns

Three hints before the answer. Server-enforced.

We borrowed the layered hint model from Khanmigo and made it stricter: the model never has the answer to give. Three hint tiers are surfaced in order, with a worked example as last resort — never the answer outright.

• Tier 1: directional nudge — "what are you noticing?"
• Tier 2: focusing question — "what does the denominator do?"
• Tier 3: partial scaffold — first step shown, rest hidden
• Final: worked example with the same shape, different numbers

Any source, every format.

Paste a URL, drop a PDF, upload an audio lecture, link a YouTube video. We extract the structure, build a topic map and let you study it however works — flashcards, mind maps, audio lessons, personalized notes.

• Flashcards with Leitner scheduling — exportable to Anki
• Mind maps that grow as you study
• Audio lessons narrated in your buddy's voice
• Personalized study guides tuned to your weak spots
• OCR for handwritten homework via Tesseract

The tutor reads what you give it.

A first-class document ingestion pipeline: semantic chunking, vector embeddings via pgvector, and cosine retrieval — so the tutor cites your textbook, not the open web.

• PDF, DOCX, PPTX, EPUB, plain text, code files
• URL scraping with article extraction
• YouTube + audio transcription via Whisper
• Image OCR for whiteboards, worksheets, handwritten notes
• Cited responses with source line numbers

Practice that maps to scores.

Rubric-locked grading using the same descriptors the real exams use. Predicted scores that move with you. AP tracks aligned to the official Course and Exam Description for every subject.

• SAT — adaptive section practice, ±20 band prediction
• ACT — composite tracking with ±1 accuracy
• AP — 38 subjects, FRQ rubric-graded
• IELTS — descriptor-locked, voice speaking practice

Every topic maps to a standard.

Common Core, NGSS, state standards — each lesson, assessment and mastery score is tagged to its standards code. Defensible reporting for IEPs, parent meetings and district reviews.

• Common Core (Math & ELA), NGSS (Science)
• All 50 state standards
• Cambridge, IB, AP Course & Exam Descriptions
• Custom district scope & sequence import

The same product, four ages.

Font sizes, touch targets, corner radii, animation duration and vocabulary all shift by grade band. The Grade 11 UI is dense and crisp. The Kindergarten UI is gentle, oversized and forgiving.

Built for every learner.

Four adaptation layers ship by default: high-contrast mode, dyslexia-friendly font, reduced motion, and grade-band theming. WCAG 2.1 AA throughout — focus rings, ARIA landmarks, keyboard nav.

• High-contrast: pure white background, no tints
• Dyslexia font: OpenDyslexic + Atkinson Hyperlegible fallback
• Reduced motion: all animations collapse to 0.001ms
• Screen-reader-first chat transcript with role tags
• Voice-only mode for visual fatigue or low-vision use