# LetAbacus - Soroban for Kids

> Mental math, no ads, offline

Canonical page: [https://chrome-stats.com/d/id6796994872](https://chrome-stats.com/d/id6796994872)

## Overview

- **ID:** `id6796994872`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** RUEI YI WU
- **Category:** Education
- **Version:** 1.1.20260830
- **Last updated:** 2026-08-31
- **First published:** 2026-08-10
- **Size:** 6.21 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/letabacus-soroban-for-kids/id6796994872)
- **Website:** [https://rexcode.app/letabacus/](https://rexcode.app/letabacus/)
- **Privacy policy:** [https://rexcode.app/letabacus/privacy/](https://rexcode.app/letabacus/privacy/)

## Description

Soroban for kids: flickable beads, lessons for all four operations, a mental math ladder, visual and listening drills, daily quests and badges. No ads, no tracking.

A soroban (Japanese abacus) app that parents can safely hand to young kids.

There is almost no text on screen — kids learn through animated demos, glowing
beads and cheerful voice encouragement. Mistakes never get a big red X, just a
friendly "try again!".

‧ A real-feel virtual abacus: multi-touch beads with a satisfying wooden click.
‧ Lesson mode: 19 units, 50 lessons — from meeting the abacus and simple add &
  subtract, through friends-of-5, friends-of-10, mixed complements, a
  place-value dojo, running sums, first multiplication and division and a
  four-ops cup, on to formal soroban multiplication and division with proper
  rod positioning — remainders, two-digit divisors and decimals included.
  Every lesson in three steps — watch, follow the glowing beads, then try it
  yourself for three stars.
‧ Understand first, then flick: before each complement unit, kids play a
  picture puzzle — "how many more to make 5 (or 10)?" — and after the lesson
  they solve it again with brand-new numbers, proving they truly got the idea.
‧ Mental math ladder: on the board, then flash, then air flick (invisible
  beads, real flicks), then pure mental math — moving the abacus into your
  child's head one step at a time.
‧ Sense Island: count at a glance, how-many-more to 5 and 10, which side has
  more, and peek-and-rebuild bead memory — number sense before numerals.
‧ Visual drills and Arena mode: difficulty follows your child's lesson
  progress, or pick your own level, earn points, and re-practice tricky ones.
‧ Listening drills at your child's pace: the app calls one term ("five"), waits
  until the beads really show 5, then calls the next ("plus three"). Three
  paces (slow / medium / fast), with one replay if missed.
‧ Big Review boss: mixed practice of everything learned, with a help-me button.
‧ Three little daily quests with a streak flame, plus a badge wall of silver
  and gold badges.
‧ Bead skins to collect: wooden, candy, starry night, dino, neon and more —
  10 skins, all unlocked by practicing — never bought with money.
‧ Voice encouragement in both English and Traditional Chinese.
‧ A parent zone behind a parental gate: insight cards, a "5 minutes today"
  suggestion, a learning snapshot export, language and pace settings.

Our promise: completely free, no ads, no tracking, no data collection. All
learning content and progress work fully offline. An optional tip jar (buy the
developer a coffee) lives behind the parental gate, is handled by Apple,
is unreachable by children, and unlocks nothing.

## Rankings

- #2,313,404 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6796994872)