atama+
: How to use it, features, and the business problems it solves
Add bookmark
What is atama+?
atama+ is an AI-powered learning system from atama plus Inc. (Tokyo, part of the KUMON group since July 2026), provided to cram schools and prep schools. Its AI diagnoses the root cause of each student's stumbling blocks — going back across grade levels — and automatically builds a personalized curriculum. Adopted in over 4,500 classrooms nationwide, including Sundai and Eikoh. Pricing is not public (included in each school's tuition); individuals can also use it through the official atama+ Online Juku from 22,000 yen per month. Japanese-language service.
Business problems it solves
About "atama+"
What is atama+?
atama+ is an AI-powered learning system provided to cram schools and prep schools by atama plus Inc. (Tokyo, Japan). Its AI diagnoses each student's level of understanding and the root causes of their stumbling blocks, then automatically builds a one-of-a-kind personalized curriculum. Since its launch in July 2017, adoption has spread to more than 4,500 cram school and prep school classrooms nationwide as of July 2026, including major players such as Sundai Preparatory School, Z-kai Group's Eikoh, Meiko Gijuku, Kyoshin, and Mabuchi Kyoshitsu. In July 2026, atama plus joined the KUMON group (Kumon Educational Japan).
Its defining feature is tracing the cause of "I don't get it" back across grade levels. For example, if a student stumbles in a high school math unit and the AI determines the root cause lies in an incomplete grasp of junior high material, it goes back that far and rebuilds the lecture videos and exercises. Students work through their personalized lessons on a tablet, while teachers use the dedicated app "atama+ COACH" to monitor every student's progress in real time and focus on coaching — this division of labor between AI and humans is the design philosophy behind atama+.
How to use it
atama+ is provided as teaching material for cram schools and prep schools, so it is not an app individuals purchase directly. The typical path to getting started:
-
Find a school that uses atama+
The official school finder (product.atama.plus/juku) lets you search partner schools by region (Hokkaido/Tohoku through Kyushu/Okinawa). If you already attend a cram school, ask whether it offers an atama+ course.
-
Take the diagnostic in a trial lesson
Many partner schools offer free trial lessons. Taking the AI diagnostic first visualizes which units you understand, where you stumble, and the root causes.
-
Study with your personalized lessons
Following the AI-built curriculum based on your diagnostic results, you cycle through roughly 5-minute lecture videos and exercises. Content is reorganized in real time as your understanding changes.
-
Get coaching from teachers
Teachers watch your learning data in atama+ COACH, step in when you get stuck, and adjust your study plan.
To study from home, there is the official "atama+ Online Juku" (for junior high students through graduates). After joining an online trial/consultation session, you get a 14-day free trial and start by building a study plan with a dedicated study trainer.
Key features
- Diagnostic AI — pinpoints understanding and root causes of stumbling blocks per unit, tracing back across grade levels
- Personalized curriculum — the AI automatically sequences lecture videos (about 5 minutes each), exercises, and reviews based on diagnostics and goals, updating with every answer
- atama+ COACH — the teacher-facing app; shows every student's progress, stumbling points, and focus level in real time
- Generative-AI question support (launched March 2026) — photograph a problem sheet to get hints and explanations, then ask follow-up questions via chat as many times as needed. Multiple AI models are combined to counter hallucinations, and explanations follow the national curriculum guidelines. Covers 11 subjects for 1st-year junior high students through graduates
- Sundai atama+ Mock Exams — online mock exams co-developed with Sundai. Taken from home, with AI weakness analysis available immediately after finishing, feeding directly into atama+ study. Online examinees surpassed 250,000 (as of October 2022)
Pricing
Pricing for atama+ itself (the B2B product for schools) is not public (inquiry required); students pay for it as part of each school's tuition, which varies by the school's course structure — check with the school you plan to attend.
The one place with published consumer pricing is the official "atama+ Online Juku" (official prices as of August 19, 2026; all in Japanese yen, tax included).
| Item | Junior high | High school / graduates |
|---|---|---|
| Enrollment fee | 22,000 yen | 22,000 yen |
| 1 subject / month | 22,000 yen | 24,200 yen |
| 2 subjects / month | 24,200 yen | 26,400 yen |
| 3 subjects / month | 27,500 yen | 29,700 yen |
| 4 subjects / month | 30,800 yen | 33,000 yen |
| 5 subjects / month | 34,100 yen | 36,300 yen |
| 6 subjects / month | — (up to 5) | 39,600 yen |
| 7 subjects / month | — | 42,900 yen |
The monthly fee covers unlimited study on the AI system plus coaching by a study trainer, question support (question form, LINE-based Q&A, etc.), and access to an online study room. Discounts apply for lump-sum payment: 3% for 3 months, 7% for 6 months, 10% for 12 months. Payment is by credit card only.
In addition, atama plus runs the in-person "Shingaku Kobetsu atama+ Juku" (over 70 locations nationwide) with enrollment fees of 22,000 yen for elementary/junior high and 33,000 yen for high school/graduates (tax included) and flat-rate "attend as much as you like" tuition — the tuition amounts are not published and are provided via information request.
Free plan / trial
There is no free version of atama+ itself. Two free entry points exist:
- 14-day free trial of atama+ Online Juku — available after the trial/consultation session; cancel within the free period and you pay nothing
- Free trial lessons at partner schools and atama+ Juku — atama+ Juku has no entrance exam, and partner-school trial lessons often include the AI diagnostic
Japanese language support
This is a service built by a Japanese company for learners in Japan: the UI, all learning content, and support are in Japanese. Materials follow Japan's national curriculum guidelines and university entrance exams (Common Test and individual exams), covering 11 subjects as of 2022. It is not an English-market product, so students studying in Japanese can use it naturally from day one.
Reputation and adoption
(as of July 2026)
(announced Sept 2022)
online examinees (Oct 2022)
(as of March 2026)
Partnerships with major cram school groups are the core of its track record.
- Sundai group — business alliance announced in September 2019, with rollout to Sundai Preparatory School locations nationwide from April 2020 (initially math, English, physics, chemistry). In April 2024 this deepened into a capital and business alliance in which the educational foundation Surugadai Gakuen acquired 35.5% of atama plus shares, and the two now jointly run "atama+ Online Juku"
- Z-kai Group (Eikoh) — a November 2019 alliance brought atama+ into 133 "Eikoh no Kobetsu Vizavi" classrooms; in March 2021 the blended in-person/online course "atama+ Vizavi" launched at 204 schools in the Tokyo area
- Joining the KUMON group — on July 5, 2026, Kumon Educational Japan acquired 100% of atama plus shares. The official announcement states the mission and organization will continue unchanged
The official site also lists more than 40 partner school brands, including Meiko Gijuku, Kyoshin, and Mabuchi Kyoshitsu.
How it differs from other tools
Compared with the consumer AI learning apps listed on AI BEST SEARCH, atama+ stands apart as subject-learning AI provided as cram school infrastructure.
| atama+ | Duolingo | SpeakBuddy | LingoChamp | |
|---|---|---|---|---|
| Target | School subjects, elementary to graduates | Languages (40+) and more | English conversation | English (pronunciation/speaking) |
| Model | Via cram schools / official online juku | Consumer app | Consumer app | Consumer app |
| Role of AI | Diagnostics and personalized curriculum | Gamified repetition + AI conversation | Conversation practice with AI characters | Phoneme-level pronunciation scoring |
| Pricing entry | Not public via schools / online juku from 22,000 yen/mo | Free (paid plans available) | In-app purchases | In-app purchases |
- Duolingo — a language app built around daily habit-forming. The first choice if your goal is habit-driven language learning rather than systematic study of exam subjects
- SpeakBuddy — focused on English speaking. atama+'s English targets entrance exams and does not cover speaking practice, so the two are complementary
- LingoChamp — English-learning AI strong in pronunciation correction; a different goal from atama+, which builds English as an exam subject (grammar and reading)
FAQ
Q. Can individuals sign up directly?
A. atama+ itself is for cram schools and prep schools, with no direct sales to individuals. To use it as an individual, enroll at a partner school or in the official "atama+ Online Juku" (junior high through graduates).
Q. Which subjects and grade levels are covered?
A. From elementary school through 3rd-year high school and graduates. At the Online Juku, junior high students get five subjects (math, English, Japanese, science, social studies); high school students and graduates get math, English, physics, chemistry, biology, classical Japanese/Chinese classics, geography and history (geography, Japanese history, world history, comprehensive history), and informatics (official listing as of August 2026).
Q. How much does it cost?
A. Via a partner school, it is included in the school's tuition and varies by school (not publicly disclosed). Published pricing exists for atama+ Online Juku: 22,000 yen enrollment plus a flat monthly fee from 22,000 yen (tax included, based on number of subjects).
Q. Can I cancel and get a refund?
A. atama+ Online Juku offers a 14-day free trial on first sign-up; cancel within the period and nothing is charged. After enrollment, lump-sum payments are settled pro rata based on the period used if you withdraw. Via partner schools, each school's own policy applies.
Q. What changes now that it has joined the KUMON group?
A. The official announcement in July 2026 says the mission and organization remain unchanged, with KUMON's network used to expand learning opportunities in Japan and abroad. No service termination or halt to existing school deployments has been announced.
Q. Is it used in schools too?
A. Cram schools and prep schools are the core, but it has also been adopted for pre-entrance education programs at 25 universities across 79 faculties (as of March 2026), and a corporate employee-training program launched in March 2026.
About the provider
atama plus Inc. (head office: 2-1-2 Koraku, Bunkyo-ku, Tokyo) was founded in April 2017 and is led by CEO Daisuke Inada. A Japanese EdTech startup, it raised about 5.1 billion yen in its July 2021 Series B round (DCM Ventures, JAFCO, Pavilion Capital, T. Rowe Price, and others), bringing cumulative funding since founding to about 8.2 billion yen.
Its capital structure has evolved in stages: in April 2024, Surugadai Gakuen — the educational foundation behind Sundai Preparatory School — acquired 35.5% of its shares in a capital and business alliance; on July 5, 2026, Kumon Educational Japan acquired 100% of the shares, making atama plus part of the KUMON group.
Beyond the atama+ learning system, its businesses span Shingaku Kobetsu atama+ Juku (franchise expansion), atama+ Online Juku, Sundai atama+ online mock exams, pre-entrance programs for universities, and corporate workforce training (the job-skills AI system "Sketto").
The information on this page is based on what is published on the official website as of August 2026. Features and pricing may change; please check the official website for the latest information.
