Polymath
A serious place for serious study.
Polymath is a spaced repetition system for people who intend to learn something difficult and to keep learning it for the rest of their lives. It is built as a plugin ecosystem: each subject is its own first-class module, authored by domain practitioners, rendered on a spare surface that favours concentration over decoration.
A plugin ecosystem
Every subject in Polymath is a plugin, because subjects differ. A Russian noun needs morphological analysis; a compiler error deserves a different kind of examination; a derivative pricing question answers to its own grammar of stochastic calculus. A single generic flashcard template cannot do justice to any of them. Each plugin is built to the shape of its field.
The catalogue grows with demand. Subscribers and waitlist signals shape the order in which subjects arrive. Work is published when it is ready.
The catalogue
Available now
Released and supported, on the App Store and via web subscription. See plans on the pricing page.
- Languages
Russian
Full pymorphy2 morphology, offline dictionary, sentence analysis.
Pre-order
Reserve a subject at founding terms. A pre-order locks today's price and credits your access from launch day -- and it is the strongest signal you can send for what we build next, because intent, not a passing click, moves a subject to the front of the queue.
- Pre-orderLanguages
Spanish
Conjugation, gender and number agreement, mood and aspect.
Pre-order at founding terms - Pre-orderLanguages
Japanese
Morphology, pitch accent, script breakdown.
Pre-order at founding terms - Pre-orderProgramming Languages
Rust
Idioms, lifetimes, unsafe, ecosystem crates.
Pre-order at founding terms - Pre-orderPure Mathematics
Linear Algebra
Vectors, matrices, spectral theory, the geometry underneath.
Pre-order at founding terms - Pre-orderArtificial Intelligence
Machine Learning
Foundations: supervised, unsupervised, bias-variance, the essentials first-principles.
Pre-order at founding terms - Pre-orderLanguages
Mandarin
Pre-order at founding terms - Pre-orderLanguages
French
Pre-order at founding terms - Pre-orderLanguages
German
Pre-order at founding terms - Pre-orderLanguages
Arabic
Pre-order at founding terms - Pre-orderLanguages
Latin
Pre-order at founding terms - Pre-orderLanguages
Ancient Greek
Pre-order at founding terms - Pre-orderProgramming Languages
Python
Pre-order at founding terms - Pre-orderProgramming Languages
TypeScript
Pre-order at founding terms - Pre-orderPure Mathematics
Real Analysis
Pre-order at founding terms - Pre-orderPure Mathematics
Probability Theory
Pre-order at founding terms - Pre-orderPure Mathematics
Category Theory
Pre-order at founding terms - Pre-orderArtificial Intelligence
Deep Learning
Pre-order at founding terms - Pre-orderArtificial Intelligence
LLM Internals
Pre-order at founding terms - Pre-orderArtificial Intelligence
Reinforcement Learning
Pre-order at founding terms - Pre-orderQuantitative Finance
Quantitative Finance
Market microstructure, systematic strategies, backtesting, risk, and derivatives -- first principles with primary-source citations.
Pre-order at founding terms
Who it is for
Polymath is for the dedicated learner. The translator keeping a second language alive. The engineer studying control theory in the evenings. The quantitative researcher working through López de Prado. The student of Latin who refuses to let it slip. The reader who wants the work of retention to be serious, quiet, and their own.
Polymath is priced as a premium product. There is no free tier, no advertising, no data sold. Each plugin is a subscription because the material continues to be written, curated, and updated.
On the system itself
The underlying scheduler is SM-2, trusted by serious learners for decades. Reviews are scheduled by how well you know the material. Your data lives on your device and syncs through your own iCloud; we never see your decks. The app is offline-first by design.
Platforms
Polymath runs on iPhone. The minimum supported device is iPhone 11, on iOS 17 or later. Older iPhones are not supported; the spaced repetition engine and plugin architecture assume the memory model and APIs introduced in iOS 17.
An Android version will be built when demand justifies the effort. Join the list below to be written to when that changes. Signal count is the principal input into the decision.
Begin
Download the app from the App Store, or purchase a plugin subscription on the web.