Plixa Quest

Read the Bytes

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Plixa Quest puts a hex dump on your screen and teaches you to read it. Every file is just bytes arranged in a grid — sixteen columns wide, memory addresses in the gutter, parsed fields highlighted in callout tags. Tap any byte region and the Inspection Bench explodes it outward: leader-lines whip to margin annotations naming each field, its byte range, its parsed value, and why the byte order matters. Flip the endianness switch the wrong way and the app surfaces exactly what breaks — a hands-on lesson no textbook delivers as cleanly. The Format Atlas documents 80 binary containers — PNG, ZIP, ELF, PE/COFF, Mach-O, TLS, PCAP, SQLite, MP4, X.509, and more — with full structural breakdowns and field tables. The Drills ladder walks you from magic-number identification through length-prefix discipline, endianness recognition, chunk navigation, CRC validation, and container archaeology. Two long-form Field Reports go deeper still: the Heartbleed TLS heartbeat bytes traced through the exact OpenSSL code path that missed a bounds check, and the PNG/ZIP polyglot — a single byte stream that is simultaneously a valid image and a valid archive. Pin any annotated cross-section to the Plates shelf, replay it as an animated walk-through, or export it as a card image to share. Three switchable engineering-diagram themes — Datasheet, Blueprint, and Vellum — keep every screen sharp at a desk or on a terminal. Plixa Quest is for developers, security engineers, CTF players, and students who want to stop treating binary files as black boxes.

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This update fixes several issues with how byte regions and their annotations are displayed, along with problems saving and exporting pinned cross-sections. Plus general stability and performance improvements.

The developer, Artem Hrabenchuk, 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 Not Collected

    The developer does not collect any data from this app.

    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

    Size
    39.6 MB
    Category
    Developer Tools
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 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
    16+
    Provider
    Artem Hrabenchuk
    • Artem Hrabenchuk has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
    Copyright
    © Artem Hrabenchuk