Simple Soroban (Abacus)
Japanese abacus with tutorials
Free · Designed for iPad. Not verified for macOS.
A complete Soroban (japanese abacus) app with tutorials, problems to solve, timed challenges, anzan training. Entirely free, with no ads or in-app purchases.
Simple Soroban is a complete Japanese abacus in your pocket. Whether you are discovering the soroban for the first time or training for serious mental calculation, everything is included and everything is free. It's multi-touch and configurable, so it feels like a real soroban.
LEARN
Step-by-step interactive tutorials teach you addition, subtraction, multiplication and division from scratch. No prior knowledge needed: you will learn how to read the beads, manipulate numbers, use complements, and carry across columns at your own pace.
PRACTICE
Freeform mode: a realistic soroban, for homework, checkout sums or just playing with numbers
Relax mode: solve calculations at your own pace and earn badges as you progress
Challenge mode: race the clock and push your calculation speed to the next level
Anzan mode: hides the beads so you manipulate the soroban in your mind, a technique used by mental calculation champions in Japan
MAKE IT YOURS
Choose between a 7-column or 9-column soroban
Multiple color themes
Plenty of settings to adapt the abacus to how you practice
FREE, REALLY
No ads. No in-app purchases. No accounts. No data collection. Simple Soroban is completely free, with nothing to unlock and nothing tracking you. Already trusted by millions of learners on Android, now available on iPhone. Whether you are a student learning arithmetic, a teacher looking for a classroom tool, or an adult keeping your mind sharp, Simple Soroban gives you the full path from your first bead flick to calculating entirely in your head.
Ratings & Reviews
The developer, Bruno Takahashi Carvalhas de Oliveira, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Bruno Takahashi Carvalhas de Oliveira
- Size
- 3.5 MB
- Category
- Education
- Compatibility
Requires iOS 18.3 or later.
- iPhone
Requires iOS 18.3 or later. - iPad
Requires iPadOS 18.3 or later. - Mac
Requires macOS 15.3 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.3 or later.
- iPhone
- Languages
English and 6 more
- English, Arabic, French, Japanese, Portuguese, Russian, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Bruno Oliveira