Bunpro
Bunpro is a Japanese language learning SaaS platform founded in 2015 in Osaka, Japan, serving self-study learners and instructors with a Spaced Repetition System covering 900+ grammar points across JLPT N5–N1, priced at $5/month or $150 lifetime, distributed via web and mobile apps.
- Company typePrivate
- Founded2015
- HeadquartersOsaka, Japan
- Headcount1–10
- GTM typeB2C
- OfferingSoftware
What Bunpro does
Bunpro is a privately held Japanese language learning platform founded in 2015 and headquartered in Osaka, Japan. The company operates a self-serve SaaS product built around a Spaced Repetition System (SRS) that schedules grammar and vocabulary reviews at adaptive intervals based on individual learner performance. Its content library covers 900+ grammar points across JLPT levels N5 through N1, supported by 10,000+ example sentences, 100,000+ vocabulary context sentences, 120+ graded reading passages, and 25 full JLPT practice tests with audio.
The platform serves primarily individual self-study learners of Japanese, with a secondary segment of language instructors via the Bunpro for Instructors program that provides a teacher dashboard with progress tracking and textbook integrations (Genki, Minna no Nihongo, Marugoto, Tobira, Tae Kim). Distribution is direct-to-consumer through the bunpro.jp website and native mobile apps on iOS and Android, supplemented by a community-led growth model spanning official forums, Discord, and social media (X, YouTube, Instagram, TikTok). The product integrates deeply with WaniKani for kanji/furigana synchronization.
Bunpro monetizes through three tiers: a free BunproFree offering with limited access, BunproPremium at $5/month with full access including SRS reviews and all content, and BunproLifetime at $150 for one-time perpetual access (discounted to $120 during the December annual sale). Additional revenue-adjacent mechanics include a Referral Program, a Community Subscription Pool for donations (1,672 months donated as of December 2025, matched by Bunpro), and a B-Point Shop for cosmetic themes. The company appears bootstrapped with no disclosed external funding and operates with a distributed team of approximately 20+ members across content, design, development, voice acting, and localization.
Bunpro firmographics
Firmographics- Name
- Bunpro
- Legal name
- Bunpro SRS
- Website
- https://bunpro.jp
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Bunpro is a Japanese language learning SaaS platform founded in 2015 in Osaka, Japan, serving self-study learners and instructors with a Spaced Repetition System covering 900+ grammar points across JLPT N5–N1, priced at $5/month or $150 lifetime, distributed via web and mobile apps.
- Ownership category
- akta.pro rank
Where Bunpro is headquartered
LocationHeadquarters
- HQ city
- Osaka
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
Bunpro business model
Business model- GTM type
- B2C
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations
Revenue model
- Premium Subscription: Monthly subscription at $5/month providing complete access to Bunpro including SRS reviews, decks, grammar study tools, and all premium features.
- Lifetime Subscription: One-time payment of $150 for lifetime access to all Bunpro features. Available during sales events at discounted prices (e.g., $120 during December annual sale).
- Gift Subscriptions: Gift subscription purchases for other users, allowing purchase of subscription time as a gift.
- Community Subscription Pool: Donations from existing subscribers that are matched by Bunpro and made available to users who cannot afford subscriptions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free tier with limited access to grammar library and learning tools |
| Subscription | Monthly | Full access subscription with monthly billing |
| One time/ perpetual license | Multi-year contract | One-time lifetime access payment |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels6 records
Bunpro product offering
Product offeringCore offering
Bunpro provides a Japanese grammar and vocabulary learning platform built on an adaptive Spaced Repetition System (SRS). The platform delivers 900+ grammar items spanning JLPT N5 through N1, more than 10,000 example sentences, 100,000+ vocabulary context sentences, 120+ graded reading passages, and 25 full JLPT practice tests. It offers self-paced study with fill-in-the-blank quizzes, audio, deep WaniKani integration, and a teacher dashboard, monetized via a $5/month subscription or a $150 lifetime license with a 30-day free trial.
Product overview
Bunpro is a single unified Japanese grammar learning platform offering tiered access through free and paid subscription models (BunproFree, BunproPremium at $5/month, and BunproLifetime at $150). The core platform provides 900+ grammar explanations, 10,000+ example sentences, 100,000+ vocabulary context sentences, and 120+ graded reading passages across JLPT N5-N1 levels. Key features include a Spaced Repetition System (SRS) for optimal review scheduling, mobile apps for iOS and Android, Custom Decks for user-created content, Kaijugation for conjugation practice, and Topics for holistic grammar groupings. The platform integrates deeply with WaniKani, offers a Teacher Dashboard for classroom use, and includes community features like a B-Point Shop and Community Subscription Pool for donations.
Differentiator
Problem solved
Functional benefit
Products and services
- Bunpro (Core Platform) Japanese grammar and vocabulary learning platform featuring 900+ grammar explanations, 10,000+ example sentences, 100,000+ vocabulary context sentences, and 120+ graded reading passages, using an adaptive SRS for optimal retention. Built for individual Japanese language learners and JLPT candidates worldwide.
- Bunpro iOS App Official iOS mobile application for Bunpro available on the App Store, providing grammar study and SRS reviews on iPhone devices for individual Japanese learners.
- Bunpro Android App Official Android mobile application for Bunpro available on Google Play Store, enabling grammar study and SRS reviews on Android devices for individual Japanese learners.
Quantifiable outcome
- JLPT N3 and N2 passing with Bunpro support
- +2 more outcomes
Companies that use Bunpro
Customer profileNamed customers8 records
Segments3 records
Ideal customer profiles2 records
Bunpro technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
AI capability3 records
Feature6 records
Bunpro partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- JMDict (Electronic Dictionary Research and Development Group)foundationalJMDict, created by Jim Breen and managed by EDRDG, is a general dictionary with ~180,000 entries. It was the initial source for the bulk of vocabulary on Bunpro. This open-source dictionary project is acknowledged as a foundational component of Bunpro's content library.
Scale indicators6 records
Recent moves6 records
Expansion highlights6 records
Bunpro competitors and assessment
Company assessmentDirect peers
- Genki (The Japan Times): Standard textbook series for Japanese learners whose curriculum Bunpro integrates with via the Instructor dashboard; competitive reference point for structured grammar curriculum.
- JapanesePod101: Japanese-specific audio and lesson library with subscription tiers; competes for the same learner segment with a podcast/audio-led format rather than Bunpro's SRS-first approach.
- WaniKani: Sister SRS-based platform for kanji and vocabulary learning; ships with deep product integration to Bunpro and serves the same self-studying Japanese learner persona on a subscription/lifetime model.
- Anki: Open-source spaced repetition flashcard platform widely used for Japanese vocabulary and grammar; competes with Bunpro's core SRS review mechanic and serves overlapping self-study learners.
- Glossika: Mass-sentence repetition platform for Japanese and other languages; targets the same serious self-study segment with an alternative spaced audio methodology.
Emerging players
- Takoboto: Japanese dictionary and grammar reference tool used by self-study learners; overlaps with Bunpro's grammar library as a complementary lookup resource.
- iTalki: Marketplace connecting Japanese learners with human tutors; overlaps with Bunpro's teacher channel and self-study learner base, often used together with Bunpro as supplements.
Broad incumbents
- Memrise: Consumer language learning platform with Japanese courses, spaced repetition, and video-based vocabulary; competes at the entry-level with Bunpro's free tier.
- Duolingo: Well-funded, gamified language-learning app offering Japanese among many languages; competes for beginner Japanese learners via a freemium mobile-first model.
- Babbel: Subscription language-learning service with Japanese course content, competing for self-study learners willing to pay recurring fees for structured curriculum.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Bunpro social profiles
Digital presenceBunpro financial estimates
Financial estimateRevenue estimate
Valuation estimate
Bunpro leadership team
Management profileNumber of profiles
Profiles5 records
Bunpro funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Bunpro M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Bunpro
What does Bunpro do?
Bunpro provides a Japanese grammar and vocabulary learning platform built on an adaptive Spaced Repetition System (SRS). The platform delivers 900+ grammar items spanning JLPT N5 through N1, more than 10,000 example sentences, 100,000+ vocabulary context sentences, 120+ graded reading passages, and 25 full JLPT practice tests. It offers self-paced study with fill-in-the-blank quizzes, audio, deep WaniKani integration, and a teacher dashboard, monetized via a $5/month subscription or a $150 lifetime license with a 30-day free trial.
Is Bunpro a public or private company?
Bunpro is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Bunpro founded?
Bunpro was founded in 2015. It employs 1 to 10 people.
Where is Bunpro based?
Bunpro is headquartered in Osaka, Japan, in the Asia region.
How does Bunpro make money?
Four revenue lines are on record. Premium Subscription is the primary driver. The others are lifetime Subscription, gift Subscriptions and community Subscription Pool.
Who are Bunpro's main competitors?
Direct peers on record are Genki (The Japan Times), JapanesePod101, WaniKani, Anki and Glossika. Emerging players are Takoboto and iTalki. Broad incumbents are Memrise, Duolingo and Babbel.
Does Bunpro have an API?
No public API is recorded for Bunpro.