Simple Soroban (Abacus) vs Robi Lab

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.

Robi Lab teaches coding, robotics, math, science, and artificial intelligence to kids ages 5 to 12, through challenges they solve by playing. A PATH, NOT A MENU Five worlds with six levels each. Every challenge unlocks the next, and every level mastered earns a certificate. Kids always know what comes next. ADAPTS TO THEIR AGE The same challenge changes with age: at 5 they learn by tapping, with no text; at 11 it brings bigger boards, obstacles, and more steps. THE FIVE WORLDS • Coding: sequences, turns, loops, conditionals, functions, variables, debugging, and binary. • Math: counting, the four operations, fractions, place value, telling time, money, measurement, and data. • Robotics and electronics: series and parallel circuits, sensors, logic gates, and current simulators. • Science: forces, matter, the human body, health, ecosystems, Earth and the Universe, and the scientific method. • Artificial intelligence: how an AI learns, data, bias, vision, language, and ethics. LEARNS AND REMEMBERS If a skill isn't there yet, Robi leaves a practice challenge on the map; if it's mastered, a harder bonus challenge. And it schedules reviews days later so what they learned sticks. IN ENGLISH AND SPANISH The whole app, including all 1,228 challenges, is complete in both languages: each child plays in the one they choose. ALIGNED TO THE CURRICULUM Every challenge is anchored to a skill in Ecuador's General Basic Education curriculum and to international frameworks: Common Core, NGSS, and the UNESCO AI competency framework. FOR FAMILIES AND SCHOOLS One adult account for the whole family; each child has their own profile and signs in without a password. Schools get a teacher dashboard with each student's progress. PRIVACY No ads and no tracking. The camera, used only by a few challenges, analyzes the image on the device and never stores or sends it. The account and all its data can be deleted from the app. FAMILY PLAN Monthly or yearly subscription that renews automatically; the price for your country is shown before you buy. Cancel anytime in Settings › your name › Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms and Conditions: https://robilab.app/terminos Privacy: https://robilab.app/privacidad