Master your materials.
No connection required.
Ingest → Organise → Generate → Schedule → Drill → Adapt. Altheia Study turns a chaotic folder of PDFs and lectures into an intelligent, adaptive study system.
Try Altheia in Your Browser
Audition 5-voice Socratic audio lessons, test single-file offline readers with instant checkpoints, play tactile high-stakes gameshows, and explore our master question banks.
Design Principles
Built on cognitive science and offline reliability.
Retrieval over reading
Reading a guide completes nothing. Answering does. Every artifact in Altheia terminates in a self-test.
Algorithm decides
The model converts meaning, but the algorithm decides. Anything involving a date, count, or threshold is deterministic code.
The vault survives
Everything a human reads is plain markdown on disk. The vault is navigable even without the app running.
Citations for everything
Nothing is asserted without a source. Every generated claim carries a citation back to a source file and page.
Intelligent Features
Everything you need for an adaptive study system.
Organise chaos effortlessly.
Point Altheia at a Google Drive folder or a messy zip. It automatically detects text layers, OCRs screenshots and handwritten notes, classifies the files, and organizes them by course and topic.
- Deduplication & Hashing
- Multimodal OCR support
- Post-pass review for low-confidence placements
Study smarter, not harder.
Spaced repetition powered by FSRS, interwoven with interleaving constraints. Questions are shuffled to maximize retention. Deadlines are mathematically clamped to your exam dates.
- FSRS Spaced Repetition
- Deadline Clamping before exams
- Confidence Calibration metrics
Active Recall Queue
Topic: Red-Black Tree Balancing
An agenda that adapts to life.
Define your daily available study time, add exams and assignments, and Altheia builds a dynamic daily agenda. Missed a day? The workload is mathematically redistributed.
- Natural-language schedule updates
- Daily Tasks (Review, Study, Practice)
- Time-boxed redistribution
Annotate with intelligence.
A native PDF reader where highlighting a passage opens a floating, movable chat anchored to the text. Every model answer is strictly cited to the local materials.
- W3C Web Annotation Anchoring
- Floating document-scoped chat
- Robust offline citations
The black-height constraint guarantees that no path is more than twice as long as any other.
Ready to transform your study process?
Experience the power of local-first, AI-driven learning on desktop or web.