# Esmerum

> Esmerum brings notes, spaced-repetition flashcards (FSRS-4.5), classrooms and visual automations into a single Project, with an AI that reads your whole library.

Esmerum organizes studying into Projects. Every Project opens with five workspaces that
share the same library: Notebook (block-based documents), Canvas (visual board), Classroom
(lessons and classes), Questions (flashcards and questions on FSRS-4.5) and Automation
(visual flows of connected nodes). An AI assistant reads the Project library on demand and
answers by citing the exact passage that supported each claim.

## Pages

- [Esmerum — AI study platform with spaced repetition](https://esmerum.com/): Esmerum brings notes, spaced-repetition flashcards (FSRS-4.5), classrooms and visual automations into a single Project, with an AI that reads your whole library.
- [Esmerum pricing — Free, Pro, Ultra and Team plans](https://esmerum.com/pricing): Start free, no card required. Pro costs $9.90 a month with 12× the free AI quota, Ultra costs $99 with 10× the Pro quota, and annual billing charges twelve months at the price of nine.
- [Esmerum Marketplace — courses, decks and study libraries](https://esmerum.com/marketplace): Video courses, flashcard decks and full libraries built by teachers. Get a package and it connects straight into your Project, receiving the creator updates automatically.
- [Create a free Esmerum account](https://esmerum.com/sign-up): Create a free Esmerum account and build your first Project in under a minute. No credit card, with all five workspaces unlocked.
- [Sign in to Esmerum](https://esmerum.com/sign-in): Sign in to your Esmerum account to pick up your Projects, pending reviews and running automations exactly where you left them.
- [Esmerum Terms of Service](https://esmerum.com/terms): Terms governing the use of Esmerum: account and security, user content, acceptable use, AI features, plans and payments, termination and governing law.
- [Esmerum Privacy Policy](https://esmerum.com/privacy): What personal data Esmerum collects, for which purposes and legal bases, how long it is kept, and how you exercise your rights over that information.

## Verifiable facts

- Esmerum organizes studying into Projects, and every Project opens with five workspaces: Notebook, Canvas, Classroom, Questions and Automation.
- Spaced repetition runs on the FSRS-4.5 algorithm, with four review grades: again, hard, good and easy.
- Which question comes next is decided by a rule, not by a model: memory urgency, error rate, topic mastery, difficulty fit and time since the last exposure.
- Every question states why it appeared at that moment, without costing a second AI call.
- The same question changes shape as memory strengthens: multiple choice, cloze, true/false and finally flashcard.
- The interface ships in six languages — English, Portuguese, Spanish, French, Italian and German — detected from the browser.
- The free plan covers all five workspaces with usage limits; Pro costs $9.90 per month and delivers 12× the free AI quota.
- Ultra costs $99 per month and delivers 10× the Pro quota, keeping the same ratio between price and usage.
- Annual billing charges twelve months at the price of nine, a 25% discount.
- Currency follows the reader: Brazilian customers pay in reais through Pix (Pro at R$ 49, Ultra at R$ 490); everyone else pays in US dollars by card subscription.
- Every plan lets you connect your own API key, and anything that runs through it does not consume the Esmerum quota.
- Automations are visual flows of connected nodes, with event and schedule triggers, and no cron expression to write.
- MCP connectors send notifications over WhatsApp, Google Calendar and other services; the token stays encrypted on the server and never inside the flow.
- The assistant answers from the material in your own Project and shows its sources: every citation opens the exact passage that supported the sentence.
- The desktop app runs on Tauri, with builds for Windows, macOS and Linux; Android ships as an APK, and iOS is planned.
- Studying is local-first: reviews are written on the device and synced afterwards, so losing connection does not interrupt a session.
- Mock exams freeze their question set at creation, are timed by the server, and never alter the spaced-repetition schedule.

## Plans and pricing

- Free — $0 — A sample of the entire platform, with a daily AI cap.
- Pro — $9.90 per month — A complete study system, with 12× the AI quota of the free plan.
- Ultra — $99 per month — Ten times the price of Pro and ten times the quota, in both windows.
- Team — $19.90 per seat per month — For schools, courses and teams that sell knowledge.
- 25% off on annual billing — twelve months charged at the price of nine.

## Full content

- [llms-full.txt](https://esmerum.com/llms-full.txt): the complete text of every public page.
- [ai-index.json](https://esmerum.com/ai-index.json): the same content as JSON, with summaries, FAQs and a word count per page.
- [sitemap.xml](https://esmerum.com/sitemap.xml): every public URL.

## Em português

> O Esmerum é uma plataforma de estudos que reúne anotações, quadro visual, salas de aula,
> flashcards com repetição espaçada (FSRS-4.5) e automações visuais em um só Project, com uma
> IA que lê o projeto inteiro e cita o trecho exato por trás de cada afirmação.

- A interface está disponível em seis idiomas: inglês, português, espanhol, francês, italiano e alemão.
- A repetição espaçada usa o FSRS-4.5, com quatro notas: again, hard, good e easy.
- Qual questão vem a seguir é decidido por regra, e não por modelo, então cada questão explica por que apareceu.
- O plano gratuito cobre as cinco workspaces com limites de uso e não pede cartão de crédito.
- No Brasil o pagamento é por Pix: o Pro custa R$ 49 por mês, com 12× a cota de IA do gratuito, e o Ultra custa R$ 490, com 10× a cota do Pro.
- O plano anual cobra doze meses pelo preço de nove (25% de desconto).
- O aplicativo de desktop roda em Tauri, para Windows, macOS e Linux; no Android há APK.

## AI usage

The public content on this site may be indexed, summarized and cited by answer engines.
When citing, use the name Esmerum and the URL of the source page.

Last updated: 2026-09-10