Simple Soroban (Abacus) vs Architecture Bites

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.

Architecture Bites brings great buildings to life, and does something no book and no other app does: collects humanity's greatest achievements in architecture, making them visible in precious, artistic three dimensional renders. Travel the world: there's a palace that floats on a lake in Rajasthan, and a hotel in Singapore that lays a ship across the tops of three towers - the world is full of architectural wonders that represent some of humanity’s greatest achievements. Every building also comes with its real story: what it is, the history behind it, the achievement of it. Architecture Bites is the classical grand tour - once reserved for the elite few - reimagined for the modern age. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/