Soroban: Abacus & Mental Math

[Made by soroban teachers who really mean it]

From a child touching a soroban (Japanese abacus) for the first time to advanced learners chasing flash anzan speed. Teachers who still stand in front of a class built this app. Watch every bead move in a video lesson, then build calculation power from the ground up, at home.

■ What you can do ・Learn the abacus from zero, watching the beads move ・Build mental math with soroban-style calculation and flash anzan ・Get faster and more accurate through daily practice ・Print practice sheets in the format of Japanese abacus exams ・Keep going: the Dojo starts at your level and awards ranks as you climb

■ Main features

【Video lessons】 Every stage of addition, subtraction, multiplication and division comes with abacus instruction video. You see how each bead moves, so complete beginners learn as if a teacher were beside them.

【Soroban (abacus)】 107 graded levels — 41 for addition and subtraction, 34 for multiplication, 32 for division — plus review and exam-style rounds.

【Mental math & flash anzan】 Soroban-style mental calculation: mental sums, mental multiplication and mental division. In flash anzan, numbers appear and vanish one after another and you add them in your head.

【Dictation of sums】 Numbers are read aloud and you calculate as you listen. Japanese, English and Chinese voices are included, and you can build your own exercises by choosing digits, number count and speed.

【Dojo mode】 Four events — dictation of sums, dictation of mental sums, sums and flash anzan — each a ladder you climb as far as you like. Three correct in a row move you up, three wrong move you back, so the difficulty always sits where you are. An AI level check places you in at most eight questions. Collect 16 ranks from Beginner to Bead Sage.

【Practice sheet maker】 Build sheets in the format of Japanese abacus and mental calculation exams and export them as PDF. Two examining bodies, grades 1 to 10 plus preliminary grades and dan ranks, and six subjects from sums to mental division.

【Receipts】 Flick through receipt pads and calculate as you go, the way the exam subject works.

【Times tables (ages 5+)】 A times table chart, a song and practice rounds — in order, shuffled and fill-in-the-blank — build a multiplication foundation before the abacus.

【Number play (ages 2+)】 Twelve games: recognising and tracing numbers, counting, comparing, partners of 5 and 10, a board game and more. Numbers are read aloud — ideal early learning for preschool kids.

【Your record】 The profile screen collects progress across every topic and Dojo rank, and turns it into a shareable image.

■ Who it is for ・Anyone starting the abacus, or weighing it up for their kids ・Learners who want faster mental math and flash anzan ・Parents looking for early learning and home study that sticks ・Anyone aiming to pass abacus or mental calculation exams ・Adults training their brain or picking up arithmetic again

■ Questions we are often asked Q. We do not own an abacus. A. You can work the abacus on screen, so you can start without a real one.

Q. My child attends an abacus school. Can we use both? A. Yes — ideal for preparation and review, and it adds practice at home.

Q. How much is free? A. Number play, times tables, the first abacus lessons and early Dojo levels are free. The rest is in the monthly plan.

■ Languages Japanese, English, Chinese, Korean, German, French, Spanish, Italian and Arabic, switchable in the app at any time.

■ From the people who made it The abacus is not just a way to calculate faster. Moving the beads, then picturing them in your head, builds concentration, a feel for numbers and the will to finish what you started. Teachers who spend their days with real students brought their own way of teaching into every video and every question here.

Practise day by day and your abacus and mental math will grow. A foundation for school arithmetic, early learning for kids, brain training for adults — in one abacus app.