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Sottaku
by Sottaku
What Sottaku is
Sottaku is a language-learning service from Perkasie, Pennsylvania, combining spaced repetition with games and tests for vocabulary study and progress tracking. It supports 15 languages and runs on the web, Android, iPhone, and a browser extension. Learners can use offline lessons, a placement test, personalized review, grammar guides, quizzes, flashcards, and reading practice where available. Flashcard scheduling uses the FSRS algorithm. Community chat supports level-appropriate questions, and leaderboards add competition. The Sottaku-Yomitan extension works as a popup dictionary that can add words from webpages and supports the 15 target languages. The free plan includes grammar guides, quizzes, and flashcards. Paid subscriptions add mistake analysis, advanced statistics, extra quest rewards, priority support, immersion materials and voices, and extension lookup and saving. Education plans are for secondary schools, universities, and independent teachers, with a minimum of 10 licenses. Elementary school classes are not supported.
Who it suits
Sottaku suits learners studying vocabulary across web and mobile devices, including people who want offline lessons, placement testing, and personalized review. Its education offer targets secondary schools, universities, and independent teachers.
What it does well
- Supports 15 languages
- Available on web, Android, iPhone, and extension
- Offers offline lessons and placement testing
- Free plan includes grammar guides, quizzes, and flashcards
- FSRS schedules flashcard reviews
What to know first
- Elementary school classes are not supported
- Education plans require at least 10 licenses
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Grammar guides · quizzes · flashcards | Free |
| Sottaku Pro | Mistake tracking and analysis · Advanced statistics · Double quest rewards · Priority support · Browser-extension lookup and flashcard saving | On request |
| Sottaku Pro Annual | Annual Sottaku Pro subscription | On request |
| Sottaku Pro (monthly) | Monthly · Full immersion materials and voices · Sottaku-Yomitan · mistake review · advanced social discovery | $12.99 a month |
| Education (annual) | Yearly; minimum 10 licenses · Sottaku Pro for learners · free classroom management · for secondary schools, universities, and independent teachers | $69.99 a year |
| Education (monthly) | Monthly; minimum 10 licenses · Sottaku Pro for learners · free classroom management · for secondary schools, universities, and independent teachers | $8.99 a month |
| Sottaku Pro (annual) | Billed annually · Full immersion materials and voices · Sottaku-Yomitan · mistake review · advanced social discovery | $99.99 a year |
As sottaku.app lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
Sottaku combines multilingual study content, spaced repetition, games, tests, and community features across web and mobile platforms. A free plan provides core study materials, while paid and education plans add deeper review, statistics, and classroom-related features.
Facts from Sottaku's own pages
- Browser extension
- Sottaku-Yomitan is a connected popup dictionary that can add words from the web to Sottaku; it supports 15 target languages. · chromewebstore.google.com, 12 Oct 2026
- Community
- Learners can ask level-appropriate questions in community chat and compete on leaderboards. · sottaku.app, 12 Oct 2026
- Education limits
- The education offer is for secondary schools, universities, and independent teachers; elementary school classes are not supported. · sottaku.app, 12 Oct 2026
- Free plan
- Yes · sottaku.app, 20 Sept 2026
- Headquarters
- Perkasie, Pennsylvania, United States · sottaku.app, 28 Sept 2026
- Languages
- The site says Sottaku supports 15 languages. · sottaku.app, 12 Oct 2026
- Languages offered
- 15 · sottaku.app, 20 Sept 2026
- Learning content
- The site lists grammar guides, quizzes, flashcards, and, where available, reading practice. · sottaku.app, 12 Oct 2026
- Mobile access
- Sottaku pages describe continuing study on the web, Android, and iPhone using the same account. · sottaku.app, 12 Oct 2026
- Mobile apps
- Yes · sottaku.app, 20 Sept 2026
- Offline lessons
- Yes · sottaku.app, 20 Sept 2026
- Personalized review
- Yes · sottaku.app, 20 Sept 2026
- Placement test
- Yes · sottaku.app, 20 Sept 2026
- Privacy data
- The privacy policy says the service may collect email address and usage data, and supports account creation or login through Google. · sottaku.app, 12 Oct 2026
- Purpose
- Sottaku is a language-learning app combining spaced repetition with games and tests to support vocabulary learning and progress tracking. · sottaku.app, 12 Oct 2026
- Security
- The maker says passwords are salted and hashed and that it does not see or store financial data. · sottaku.app, 12 Oct 2026
- Spaced repetition
- Sottaku says its flashcard system uses the FSRS algorithm to optimize review scheduling. · sottaku.app, 12 Oct 2026
- Support
- The developer invites questions, comments, and feedback by email or through X. · sottaku.app, 12 Oct 2026
- Trial
- The pages opened describe free access and paid Pro subscriptions but do not state a free-trial period. · sottaku.app, 12 Oct 2026
Where Sottaku stands on Freedom251
- Language learning apps#124 of 278