SuperMemo

Spec sheet

What it does

SuperMemo provides language-learning courses and spaced-repetition study software for web and mobile users.Read 14 Oct 2026 · supermemo.com

Deployment

cloud, desktop, mobileRead 19 Sep 2026 · supermemo.com

Free plan

YesRead 19 Sep 2026 · supermemo.com

Mobile apps

YesRead 19 Sep 2026 · supermemo.com

Support

Technical support is offered through a contact form and support email, with in-course problem reporting available.Read 14 Oct 2026 · supermemo.com

Headquarters

Poznań, PolandRead 23 Sep 2026 · supermemo.com

Founded

1991Read 23 Sep 2026 · supermemo.com

AI Assistant

The AI Assistant answers study questions and can provide explanations, translations and usage examples.Read 14 Oct 2026 · supermemo.com

API authentication

The API requires project-specific API keys supplied as Bearer tokens in the Authorization header.Read 14 Oct 2026 · api.supermemo.com

API availability

SuperMemo introduced an external API in 2026 that exposes its SM-20 spaced-repetition technology to developers.Read 14 Oct 2026 · supermemo.com

API capabilities

Documented endpoints process reviews, optimize SM-20 weights, import CSV histories, query next reviews and retrieve review histories.Read 14 Oct 2026 · api.supermemo.com

API documentation depth

The API reference is presented as OpenAPI 3.1.0 and includes Shell/Curl client examples.Read 14 Oct 2026 · api.supermemo.com

Company founding

SuperMemo World was founded on July 5, 1991 by Krzysztof Biedalak and Piotr Woźniak in Poznań.Read 14 Oct 2026 · supermemo.com

Company headquarters

SuperMemo World lists ul. Dąbrowskiego 77A, 60-529 Poznań, Poland as its address.Read 14 Oct 2026 · supermemo.com

Company legal identity

The maker identifies itself as SuperMemo World sp. z o.o., registered in Poland under KRS 0000027598.Read 14 Oct 2026 · supermemo.com

Company size

LinkedIn lists SuperMemo World as a privately held e-learning company with 11–50 employees and 23 discoverable employees.Read 14 Oct 2026 · linkedin.com

Course catalogue

The service offers nearly 300 courses across 25 languages, including vocabulary, grammar, business and exam-oriented material.Read 14 Oct 2026 · supermemo.com

Funding and ownership

Crunchbase lists SuperMemo World sp. z o.o. as a private, for-profit company and does not show disclosed funding.Read 14 Oct 2026 · crunchbase.com

Languages offered

25Read 19 Sep 2026 · supermemo.com

Learning plans

Users can set daily card goals and repetition limits to tailor study workload.Read 14 Oct 2026 · supermemo.com

Licence

SuperMemo’s commercial algorithm implementations remain proprietary trade secrets rather than open-source software.Read 14 Oct 2026 · supermemo.com

Limit: bugs and synchronization

Apple reviewers report bugs, purchased-course synchronization problems and difficulty logging out or starting courses.Read 14 Oct 2026 · apps.apple.com

Limit: discontinued legacy apps

The Windows app, app.supermemo.com browser version and an older Android release were discontinued in September 2025 because their technologies blocked further development.Read 14 Oct 2026 · supermemo.com

Limit: interface and usability

An independent review describes the classic desktop product as having an aged interface and user experience.Read 14 Oct 2026 · pleasurable-learning.com

Limit: search and dark mode

Google Play reviewers report that accented-character search is faulty and that a dark mode is still missing.Read 14 Oct 2026 · play.google.com

Limit: standards and media support

The same independent review reports weak support for PDF, Markdown and LaTeX and problems with some video, GIF and image handling.Read 14 Oct 2026 · pleasurable-learning.com

MemoChat

MemoChat provides AI-driven role-play conversations for practicing reading, writing, speaking and listening.Read 14 Oct 2026 · supermemo.com

MemoTranslator

MemoTranslator translates words or sentences and lets users turn translations into MemoCards.Read 14 Oct 2026 · supermemo.com

Notable news

SuperMemo announced its SM-20 API debut in 2026, allowing external products to embed its adaptive repetition engine.Read 14 Oct 2026 · supermemo.com

Offline learning

Offline study is supported in the current Android and iOS apps, while the browser version is online-only.Read 14 Oct 2026 · supermemo.com

Offline lessons

YesRead 19 Sep 2026 · supermemo.com

Personalized review

YesRead 19 Sep 2026 · supermemo.com

Placement test

YesRead 19 Sep 2026 · supermemo.com

Praise: incremental reading

A Hacker News user praised incremental reading as a way to keep up with many articles and preferred it to bookmarks or open tabs.Read 14 Oct 2026 · news.ycombinator.com

Praise: learning effectiveness

An Apple reviewer praised the algorithm and course content, describing daily use for German and French vocabulary and valuing the audio and example sentences.Read 14 Oct 2026 · apps.apple.com

Progress tools

The app includes learning statistics, seven-day and overall progress views, and a user leaderboard.Read 14 Oct 2026 · supermemo.com

Rating on Apple App Store

4.2 out of 5 from 132 ratings.Read 14 Oct 2026 · apps.apple.com

Rating on Google Play

3.8 out of 5 from 905 reviews.Read 14 Oct 2026 · play.google.com

Rating on Trustpilot

3.7 out of 5 from 1 review.Read 14 Oct 2026 · pl.trustpilot.com

Security declaration

Google Play’s developer-provided data-safety section says no data is shared with third parties and no data is collected.Read 14 Oct 2026 · play.google.com

Spaced repetition

The scheduling algorithm selects individualized review intervals from a learner’s recall results and history.Read 14 Oct 2026 · supermemo.com

Speech practice

YesRead 19 Sep 2026 · supermemo.com

Supported systems

The web app runs in modern browsers on Windows 11, Linux and macOS; mobile apps support recent Android and iOS versions.Read 14 Oct 2026 · supermemo.com

User-created material

Users can add their own cards and notes and create private language courses.Read 14 Oct 2026 · supermemo.com

Plans and prices

Every SuperMemo plan and price →

Where Specifiction places it

• Language learning apps#3 of 2789.3
• Spaced Repetition Software#6 of 388.5