MasterJi: Learn & Code

Code challenges & progress

Free · Designed for iPad

MasterJi is your free coding practice coach—built for students, working developers, and community learners who want to stay consistent with interview prep. What you can do: • Join live multiplayer quizzes with real-time questions and compete on the leaderboard • Jump into coding challenges, submit proof with images, and climb challenge rankings • Solve curated problems in the in-app editor with sample tests, language templates, and detailed results • Explore daily problem drops, company-tagged sets, and public coding sheets tailored to core data structures and algorithms • Earn XP, track your heatmap, maintain streaks, and collect challenge winner badges • Join Town Halls and chat in real time with your community (including GIFs, images, and @mentions) Live Quiz Features: → Real-time multiple choice, ratings, and text-based questions → Instant feedback on your answers with score updates → Live leaderboard showing your rank and average response time → Timed questions to test your speed and accuracy → Compete with other developers in your community Sign in with Apple, Google, or GitHub to sync progress across devices. MasterJi never shows ads or sells your data, and all uploads stay inside the community. Push notifications keep you informed about quiz starts, wins, upcoming deadlines, and code review reminders. Perfect for: → Students preparing for technical interviews → Developers staying sharp between jobs → Anyone building a consistent coding habit → Communities running live coding competitions Start your coding journey today—completely free.

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What's New in Version 1.4.2 Town Halls - Updated Town Halls access logic so more users can join and participate - Improved Town Halls data fetching with smarter polling and faster unread count updates when the dropdown is open Chat & Messaging - Added @mentions with user autocomplete for easier conversations in chat rooms - Updated mention autocomplete so “@everyone” only appears when “@” is typed with no additional text - Improved mention rendering in replies for clearer context - Added image sharing in chat (AWS S3) with an optional caption - Added an internal badge indicator for staff-only rooms - Improved chat scrolling behavior, including fixes for auto-scroll issues - Improved message deletion notices to show whether you, someone else, or a moderator deleted the message - Expanded emoji reactions and refined reactions layout for better consistency - Improved emoji bar positioning to dynamically fit available space - Updated message bubble styling, colors, and GIF aspect ratios for better readability Notifications - Suppressed mention notifications while the app is in the foreground to reduce distractions Performance - Improved message fetching by merging results to avoid missing messages - Fixed Supabase timestamp parsing to ensure correct UTC handling - Improved token retry handling and general stability improvements and minor bug fixes

The developer, Hitesh Choudhary, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Contact Info
    • User Content
    • Identifiers
    • Usage Data

Privacy practices may vary based, for example, on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

  • Provider
    • Hitesh Choudhary
  • Size
    • 39.5 MB
  • Category
    • Education
  • Compatibility
    Requires iOS 15.1 or later.
    • iPhone
      Requires iOS 15.1 or later.
    • iPad
      Requires iPadOS 15.1 or later.
    • iPod touch
      Requires iOS 15.1 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
  • Languages
    • English
  • Age Rating
    13+
    • 13+
    • Frequent
      Contests

      Contains
      Gambling and Contests
      User-Generated Content
  • Copyright
    • © 2025 MasterJi