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CoderKit Features Overview

A complete guide to every feature inside CoderKit—your complete mobile IDE and learning platform.

🎯 The Core Experience

CoderKit has two main modes:

1. IDE Mode - Write, Run, Debug Code

Everything you need to code like a professional, right on your phone.

2. Learn Mode - Interactive Courses & Practice

Step-by-step lessons with visualizers, challenges, and progress tracking.

Let's explore both.

💻 IDE Mode: The Code Editor

Multi-Tab Editor

  • Open multiple files in tabs (switch between them instantly)
  • Language detection - Automatically recognizes file type (.py, .java, .js, etc.)
  • Syntax highlighting - Color-coded keywords, strings, comments
  • Line numbers - Easy reference for debugging
  • Horizontal scrolling - Type long lines without wrapping

Example workflow:

📁 my-project
  ├─ main.py (Tab 1)
  ├─ utils.py (Tab 2)
  └─ data.json (Tab 3)
→ Tap any tab to switch files instantly

Custom Virtual Keyboard

A coding-first keyboard designed for touch:

What makes it special:

  • ✅ Access { } ( ) [ ] : ; = + - with one tap
  • ✅ Language-aware (Python symbols ≠ Java symbols)
  • ✅ Massive spacebar for easy hitting
  • ✅ UNDO/REDO buttons (no undo history lost)
  • ✅ Snippet insertion button
  • ✅ Numbers row (always visible)

Keyboard Layout:

[Symbols Row: { } ( ) [ ] : ; = ...]
[Numbers: 0 1 2 3 4 5 6 7 8 9]
[Letters: Q W E R T Y U I O P ...]
[Utils: SNIP | TAB | UNDO | REDO | SPACE | ENTER | ⌫]

Shift Behavior:

  • Tap once → Next letter uppercase
  • Long press → CAPS LOCK toggle

Code Execution

  • Run button (▶) - Execute your code with one tap
  • Stop button (⏹) - Kill running process
  • Real-time output - See results instantly in terminal
  • Interactive input - Program asking for input? Type in terminal and submit
  • Error messages - Clear, actionable error messages with line numbers

Terminal Output

  • Live streaming output - See print() statements as they happen
  • Colored text - ANSI colors supported (for beautiful terminal output)
  • Scroll history - See all previous output
  • Clear terminal - Wipe it clean for the next run
  • Copy output - Select and copy any output text

Example:

▶ Run
$ python main.py
What's your name? → [user types: Alice]
Hello, Alice!

File Management

  • File explorer sidebar (swipe from left)
  • Create files - Right-click → New File
  • Rename/Delete - Hold file → Options
  • Create folders - Organize projects
  • Import files - Add existing code to project
  • Download files - Export code to save on device

Syntax Highlighting

Languages supported with full syntax coloring:

  • 🐍 Python
  • ☕ Java
  • 🌐 JavaScript, TypeScript, HTML, CSS
  • 🔧 C, C++
  • 🎯 Go
  • 💎 Groovy, Clojure, PHP, Ruby, Bash
  • 📊 JSON, XML, SQL

📚 Learn Mode: Interactive Courses

Course Browser

  • Browse all courses - Organized by language & difficulty
  • Free & Premium - Some courses free, others require subscription
  • Filter by level - Beginner, Intermediate, Advanced
  • Search - Find courses by keyword or language

How Lessons Work

Every lesson follows the Rhombus Methodology (our proven 7-layer learning framework):

Explanation → Visualize → Practice → Challenge → Master
    ↓           ↓           ↓          ↓         ↓
 Theory      Animation   Hands-on  Problem-  Deep
 + Text      + Touch     Solving   Solving   Dive

Interactive Visualizers

20+ specialized visualizers to visualize concepts:

Data Structures:

  • 🔗 Linked Lists (see nodes connect)
  • 🌳 Binary Trees (watch algorithms navigate)
  • 📊 Hash Tables (visualize collisions)
  • 📈 Graphs (see pathfinding in action)

Algorithms:

  • ⚡ Sorting (watch bubbles, merges, quicksort animate)
  • 🔍 Searching (see binary search narrow down)
  • 🧭 Pathfinding (watch A* and Dijkstra solve mazes)

Core Concepts:

  • 💾 Memory (see stack/heap allocation)
  • 🔄 Loops (watch iteration happen)
  • 🌊 Recursion (see function calls stack)
  • ⚙️ State Machine (state transitions animated)

Languages:

  • 🐍 Python syntax, built-in functions, libraries
  • ☕ Java OOP, inheritance, polymorphism
  • 🌐 DOM manipulation, event flow, async/await

How they work:

  1. Play: Tap play to animate the visualizer
  2. Pause: Stop at any moment to examine the state
  3. Interact: Drag nodes, change inputs, watch instant feedback
  4. Control: Adjust speed, skip to specific step

Guided Practice

  • Code editor with hints - Semi-transparent "ghost code" shows the pattern
  • Type-along - Match the hint structure with your own code
  • Validation - Instant feedback when you complete correctly
  • Explanations - Tooltips explain each step

Example:

Task: Write a function that returns the square of a number

Ghost Code (semi-transparent):
def square(___):
    return ___ * ___

You type:
def square(n):
    return n * n

✅ Correct! You completed this challenge!

Challenges & Quizzes

  • Bug Squasher - Buggy code provided; find and fix the bug
  • Code Scramble - Lines of code scrambled; unscramble to fix logic
  • Function Builder - Drag blocks to build functions
  • Multiple Choice - Quick concept checks
  • Free Coding - Write from scratch with minimal hints

Progress Tracking

  • Concept completion - See which concepts you've mastered
  • Course progress bar - Visual indicator of course completion
  • Stats dashboard - Lines typed, problems solved, current streak
  • Leaderboard - Compete with friends (optional)
  • Badges & achievements - Unlock badges for milestones

🌐 Web Preview

Live HTML/CSS/JS Preview

  • Side-by-side editor & preview - Edit left, see changes right
  • Live refresh - Preview updates as you type
  • Responsive preview - Test on different screen sizes
  • Mobile viewport - See how your web app looks on phones

Web Frameworks Support

  • React - Full JSX support with hot reload
  • Vue - Single File Components
  • Vanilla JavaScript - Fetch API, DOM manipulation
  • Tailwind CSS - Utility-first CSS framework
  • Bootstrap - Responsive framework

Browser Features

  • Console logs - See console.log() output in terminal
  • Network requests - Basic fetch/XHR visualization
  • Local storage - Test localStorage API
  • Responsive testing - Portrait & landscape modes

🔧 Advanced Features

Search & Replace

  • Find text - Search across current file
  • Replace - Replace single or all occurrences
  • Case sensitive - Toggle for exact matching
  • Regular expressions - Advanced pattern matching

Code Snippets

  • Snippet library - Pre-built code templates
  • Quick insert - SNIP button → select → insert
  • Custom snippets - Create your own (coming soon)
  • Language-specific - Different snippets per language

Example snippets:

# Python - for loop
for i in range(10):
    print(i)

# Python - list comprehension
squares = [x**2 for x in range(10)]

Theme & Appearance

  • Dark mode - Easy on the eyes (default for developers)
  • Light mode - For bright environments
  • Custom colors - Syntax highlighting customization
  • Font size - Adjust for your eyesight
  • Font family - Monospace fonts (Fira Code, JetBrains Mono)

📊 Community & Social

Share Code

  • Export code - Download as .py, .java, etc.
  • Share projects - QR code to share with friends
  • GitHub integration - Push to GitHub (coming soon)

Leaderboards

  • Weekly challenges - Compete with others
  • Language rankings - Top coders per language
  • Friend rankings - See how you stack up

Community Forum

  • Ask questions - Get help from the community
  • Share solutions - Show your cool projects
  • Discuss concepts - Deep dives on learning topics

🎁 Subscriptions & Pricing

Free Plan

  • ✅ Python & Web IDEs (unlimited)
  • ✅ Free courses (intro level)
  • ✅ 3 interactive visualizers
  • ✅ Basic stats tracking
  • ❌ No premium courses
  • ❌ Limited challenges

Subscription Plans

🌟 Workspace Web ($1.99/mo or $11.99/yr)

  • ✅ All free features
  • ✅ Web + JavaScript + TypeScript IDE
  • ✅ Premium web development courses
  • ✅ All visualizers (20+)
  • ✅ Unlimited challenges

💎 Workspace Enterprise ($3.99/mo or $29.99/yr)

  • ✅ Everything in Web +
  • ✅ Java + C/C++ + Go IDEs
  • ✅ Enterprise courses (Spring, Django)
  • ✅ Priority support
  • ✅ Offline course downloads

⭐ Full Stack Pro ($4.99/mo or $39.99/yr)

  • ✅ EVERYTHING
  • ✅ All languages & courses
  • ✅ Desktop sync (VS Code extension)
  • ✅ Project backups
  • ✅ No ads

Individual Courses

  • $5.99–$19.99 - Buy single courses
  • Permanent access - Lifetime after purchase
  • Money-back guarantee - 30 days if unsatisfied

⚡ Offline Capabilities

Works Without Internet

  • ✅ Code editor (always online)
  • ✅ Language runtimes (download once, use offline)
  • ✅ Bundled courses (offline access)
  • ✅ Visualizers (no internet needed)

What Requires Internet

  • 📶 Downloading language packs (1st time)
  • 📶 Syncing progress to cloud
  • 📶 Downloading premium courses
  • 📶 GitHub integration (fetching)

🚀 Performance

Optimizations

  • Lazy loading - Large files load smoothly
  • Cached files - Faster re-opening of projects
  • Efficient rendering - 60fps smooth scrolling
  • Compression - Minimal data usage

System Requirements

  • RAM: 4GB minimum (works best with 6GB+)
  • Storage: 200MB+ free (+ language runtime size)
  • Android: API 29+ (Android 10+)

📞 Getting Help

In-app Help:

  • Long-press any button for tooltip
  • Settings → Help → Video tutorials
  • Settings → FAQ

Online Support:

Ready to explore? Download CoderKit and start coding! 🚀