[Supervised by Satsuki Abacus Dojo] Learn the abacus (soroban) with video.
Learn the soroban under the supervision of Satsuki Abacus Dojo, an active abacus school in Osaka, Japan — a member of the Japan Abacus Federation with a proven record, including perfect-score wins at the Kinki Regional Soroban Championship (1st in Kinki) and the 2024 "Osaka No.1 Soroban" tournament. Real teaching know-how is built into the app.
From children touching a soroban for the first time to advanced learners mastering mental math and flash anzan — watch every bead movement in the video lessons and build calculation skills from the ground up. Great before a soroban class, for review alongside class, or for learning the abacus at home.
■ What you can achieve
- Do mental math: calculate numbers quickly in your head with soroban-style mental math and flash anzan.
- Calculate faster and more accurately: from addition to division, skills grow with daily practice.
- Grow focus and number sense: solving problems one by one builds concentration, a feel for numbers, and perseverance.
- Keep going at home with class-quality lessons supervised by a real dojo — even beginners can keep learning as if in class.
■ Who it's for
- Beginners who want to start the abacus, or are considering it as a lesson
- Anyone who wants faster, more accurate mental math and flash anzan
- Parents using the abacus for a child's education and home learning
- Learners who preview/review a soroban class, or can't easily attend one
- Anyone aiming to pass mental-math / abacus exams
- Adults who want brain training and stronger calculation skills
■ Main features
[Video Lessons] (supervised by Satsuki Abacus Dojo)
Learn soroban basics on video — many lessons for addition, subtraction and multiplication. See exactly how the beads move, so even beginners progress as if taught in class. Division videos coming soon.
[Soroban (Abacus)]
Practice addition, subtraction, multiplication and division with step-by-step problems, from beginner to advanced. Daily practice steadily builds real ability.
[Mental Math & Flash Anzan]
Soroban-style mental math, sight reading, mental multiplication and division. With flash anzan, add up numbers flashed one after another — great practice for mental-math and abacus exams.
[Dictation Calculation]
Full dictation calculation with read-aloud in Japanese, English and Chinese. Create your own problems and download audio. Train listening and mental math at once.
[Slip Calculation]
Swipe to flip slips in proper slip-calculation style and build practical calculation skills.
[Times Tables (ages 5+)]
A chart, a song and practice problems (in order, random, fill-in-the-blank) make multiplication stick. A great step before the abacus and for elementary math.
[Number Play (ages 2+)]
12 number games let little ones enjoy getting familiar with numbers, with read-aloud of numbers and questions — perfect for early learning.
■ About Satsuki Abacus Dojo
With the philosophy "delivering excellence to the future," the dojo values face-to-face soroban education, with individual guidance from first-time basics to a competitive team course. This app recreates that method under the dojo's supervision, so you can study at home with the same approach as in class.
■ FAQ
Q. I don't have an abacus at home.
A. You can operate a soroban on screen, so you can start without a physical one.
Q. I'm a complete beginner.
A. Video lessons supervised by the dojo teach you from how to move the beads — start with confidence.
Q. Can I use it with my soroban class?
A. Yes — perfect for previewing and reviewing class, and adding home practice.
Q. What ages can use it?
A. Number Play from age 2 and Times Tables from age 5; the soroban suits children comfortable with numbers, from kindergarten up.
Through daily practice, steadily build your abacus and mental-math skills — great for an arithmetic foundation, a child's education, and adult brain training. Start your soroban journey today.