Monogusa

What Monogusa does

Monogusa, Inc. (operating as Monoxer) is a Tokyo-based edtech company founded in 2016 that provides an AI-powered memory retention learning application for K-12 schools, juku (cram schools), and corporate training departments in Japan. The platform differentiates from general learning tools by focusing specifically on 'anchoring' (定着) — moving learners from understanding to mastery — rather than on initial comprehension. Its core technology computes a per-learner 'memory degree' score and 'forgetting speed' metric from past answer patterns, then uses predictive analytics and a recommendation engine to generate personalized problem sets at optimal difficulty, timing, frequency, and format. The system is delivered through iOS and Android mobile apps plus a web-based admin portal with organization codes.

The product portfolio centers on the Monoxer app and is augmented by an integrated Learning Plan module, a Memory Degree & Learning Status analytics dashboard, an in-app quiz function, CSV-based upload for custom teaching or training materials, and Monogusa Market — a marketplace for third-party commercial study materials, including a June 2026 partnership with Obunsha to deliver in-app exercises from its 'Scramble English Grammar & Usage 5th Edition' university entrance exam reference book. Customers span education (SAPIX, Kawai Juku Manavis, Seikei High School, Yasuda Gakuen, Reitaku, Seijo Gakuen, Clark Memorial International High School, Yaruki Switch Group), retail (Bic Camera), insurance (Tokio Marine Nichido, NN Life), cosmetics (Kose), airlines (ANA), construction (Will of Construction, Gakunan Construction), logistics (Art Setting Delivery), and consumer finance (SMBC Consumer Finance).

Monogusa operates a B2B/B2B2C subscription model priced per learner account, with a 2-week free trial that includes dedicated staff support, and additional transactional revenue from Monogusa Market commercial content. The company has raised approximately $33M in total disclosed funding across four rounds, most recently a $12.2M Series 3 in October 2025 co-led by Global Brain and Sumitomo with strategic participation from ANA Holdings, Mitsui Chemicals, Tokyu Construction, and First Light Capital. All revenue is generated in Japan.

Name

Monogusa

Legal name

Monoxer, Inc.

Website

https://monoxer.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

101–250 employees

Short description

Monogusa, Inc. (Monoxer) is a Tokyo-based edtech company that provides an AI-powered memory retention learning app for K-12 schools, cram schools, and corporate training departments in Japan, generating revenue through per-learner subscriptions and a content marketplace.

Ownership category

akta.pro rank

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Markets served

GTM type

B2B and B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations

Revenue model

1. Subscription-based Learning Platform: Monoxer generates revenue through subscription fees for student/learner accounts. The pricing is based on the number of learner accounts, with enterprise deployments charging per student. Additional fees may apply for Monoxer Market commercial content purchases.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

Monogusa provides Monoxer, an AI-powered memory retention learning app that calculates each learner's memory degree and forgetting speed to automatically generate personalized problems at optimal difficulty, timing, and quantity. The platform supports schools, juku (cram schools), and corporate training programs with custom CSV content uploads, progress analytics, and a marketplace of commercial exam-prep content, transitioning learners from "understanding" to mastery.

Product overview

Monoxer is a single unified learning platform focused exclusively on memory retention, differentiating from understanding-focused educational tools. The platform centers on the core Monoxer app which provides AI-powered adaptive problem generation and spaced repetition scheduling. Key integrated features include the Learning Plan module (for personalized study scheduling based on memory/forgetting calculations), Memory Degree Tracking (for visualizing retention levels by individual/class/team), Quiz functionality, Original Materials Upload (enabling CSV-based custom content delivery), and Monogusa Market (a marketplace for third-party commercial study materials). All features operate within the unified Monoxer ecosystem rather than as standalone products.

Differentiator

Problem solved

Functional benefit

Products and services

• Monoxer (モノグサ) An AI-powered memory retention learning app that delivers personalized problems at optimal timing, sequence, frequency, and variety for each learner. Used by K-12 schools, juku (cram schools), and corporations for vocabulary, kanji, English, math formulas, product knowledge, and certification preparation.
• Monogusa Market (モノグサマーケット) A marketplace offering commercially available study materials for certification exam preparation and standardized content, sold separately based on number of learners. Includes third-party publisher content such as Obunsha's English grammar textbooks.

Quantifiable outcome

• Eiken test takers increased by 2.5x or more at Seikei High School
• +2 more outcomes

Named customers16 records

Segments3 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature6 records

Partnerships

One partnership is on record.

• Obunsha (旺文社)coreStrategic or Co-development Partner · 3 June 2026Obunsha's popular university entrance exam reference book 'Scramble English Grammar & Vocabulary 5th Edition' is now available on Monoxer, marking the first time Monoxer supports in-app exercises. This partnership provides Monoxer users with access to established commercial exam preparation content.

Recent moves6 records

Expansion highlights6 records

Direct peers

• atama plus: Japanese AI-driven adaptive tutoring platform for Juku and schools; closest direct competitor with similar personalization model and Japanese K-12/juku GTM.
• Surala Net (すららネット): Japanese adaptive e-learning platform serving schools, Juku, and students with personalized curricula; overlaps Monoxer in K-12 adaptive learning.
• Quizlet: Global adaptive learning platform with spaced-repetition and memory tools; comparable in memory-retention mechanics and consumer/education user base.
• Anki (AnkiWeb / AnkiApp): Open-source spaced-repetition flashcard system focused on memory retention; competes with Monoxer on the core memory algorithm premise.
• Memrise: Vocabulary and memory-focused language learning app using spaced repetition; comparable in retention-focused adaptive methodology and consumer-leaning GTM.
• Studyplus: Japanese study tracking and learning community platform; comparable consumer-facing learning app with similar K-12 and exam-prep use cases in Japan.
• Sana Labs: AI-powered enterprise learning platform focused on knowledge retention and adaptive corporate training; mirrors Monoxer's enterprise segment value proposition.
• IXL Learning: Adaptive K-12 learning platform with personalized practice and analytics dashboards; competes for the same school-segment wallet Monoxer addresses.

Broad incumbents

• Duolingo: Global scaled adaptive language learning platform; broader scope than Monoxer but demonstrates the scaled model for AI-personalized retention-based learning.
• Kahoot!: Engagement-focused learning and corporate training platform with quiz mechanics; comparable in school and enterprise training use cases and content marketplace ambitions.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Customer concentration

• Xx.com/monoxerjp
• Facebookfacebook.com/monoxer

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds4 records

Investors11 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Monogusa