Read19 vs IGO Academy

Read19 brings cloud-powered KataGo analysis to iPhone, iPad, and Mac. Play directly against AI and watch win rate and score lead update move by move. Import SGF records to explore candidate moves, principal variations, ownership, and whole-game trends. Read19 flags inaccuracies, mistakes, and blunders by win-rate and point loss, so you can focus on the moves that changed the game. Your games and reviews stay on device. Sign in to sync privately with iCloud across devices and export standard SGF files. Read19 prefers secure WSS and falls back to HTTPS on restricted networks. Advanced users can connect to a compatible backend with custom HTTPS/WSS endpoints and an optional Bearer token. Free includes 100,000 visits each calendar month with the Fast model. Plus unlocks the stronger Balanced model, more concurrency, and 2,000,000 monthly visits. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

IGO Academy is a complete way to learn and play Go — the ancient board game also known as Baduk (바둑) and Weiqi (围棋). Whether you have never placed a stone or you are sharpening your reading, everything is here, offline, with no ads and no accounts required. LEARN FROM ZERO • Eight interactive lessons take you from the very first stone to scoring a finished game: liberties and capture, atari, saving stones, illegal moves, the ko rule, life and two eyes, and territory. • Every lesson step is hands-on — you play the move yourself. 500+ PROBLEMS TO SHARPEN YOUR READING • More than 100 problems at each of five difficulty tiers: Novice, Easy, Normal, Hard, and Expert. • Capture, atari, escape, connection, and life-and-death (tsumego) — including snapbacks and vital-point shapes. • Your progress is tracked so you always know what is left. FIVE LEVELS OF AI • Play full games against opponents from gentle beginner to a Monte-Carlo Tree Search engine that actually reads ahead. • Choose your color, add handicap stones, and play on 5×5, 7×7, 9×9, 13×13, 19×19, or 21×21 boards. PLAY PEOPLE • Game Center for online matches. • Local-network play over your Wi-Fi or wired network using Bonjour — no internet or account needed. BUILT RIGHT • Full rules: captures, suicide, simple ko and positional superko, two-pass scoring (Chinese area or Japanese territory) with komi, and unlimited undo. • Export any game as an SGF file to study or share. • Clean, native, and fast. IGO Academy is free. Sit down at the board and play.