Subway3D vs Learn Claude (Cert Exam Prep)

This app has a 3D representation of five different subway systems: Paris, Moscow, London, Tokyo and New York. The app is a 3D map, showing each subway station's location and the elevation and location of the subway lines in the station and between stations. If you are in the city, the app can determine the nearest subway station, and calculate a route to any other station in the system. The map can be zoomed, and rotated around the x,y or z axis to get a view of the system from any angle.

CCA Foundations is a 21-day, self-paced study guide for developers preparing to work effectively with Claude Code, Anthropic's agentic coding tool. Each day is a focused module: read the concepts, then complete a hands-on exercise in the companion GitHub repository using Claude Code on your own machine. The app is the map; the repo is the territory. WHAT'S INSIDE - Daily modules organized into a three-week path, from fundamentals through advanced agent workflows and exam prep - Reference documents covering tools, permissions, hooks, MCP, subagents, and more - Flashcard decks with spaced review for quick recall, including a terse quick-recall deck with mnemonics - Progress tracking and end-of-module reflections that sync across devices when you sign in - Full curriculum available offline; only sign-in and progress sync need a connection WHO IT'S FOR - Developers who want a structured, practice-first path to Claude Code fluency, including those preparing for cert-style assessments. An account is optional for reading. Signing in adds synced progress and reflections.