DiffMaster — File Compare

Text & Code Diff Tool

₹ 2,999 · Designed for iPad. Not verified for macOS.

Native PDF & DOCX comparison! 30+ file formats, 8 languages, 6 color themes. NEW: syntax highlighting, PDF export. Side-by-side diff at a glance. DiffMaster is a professional file comparison tool that helps you quickly and intuitively discover every difference between two files. Supports native PDF & DOCX text extraction, 30+ programming languages, and 8 interface languages. ◆ CORE FEATURES • Side-by-Side Comparison Two synchronized panels with smooth scrolling. Additions in green, deletions in red, modifications in orange — differences at a glance. • Word-Level Diff Highlighting Not just changed lines — pinpoint the exact words that were modified within each line. • Native PDF & DOCX Support Compare PDF and Word documents directly. Text is extracted on-device with zero third-party dependencies. • 30+ File Formats Swift, Python, Java, JavaScript, Go, Rust, JSON, XML, YAML, Markdown, HTML, CSS, and many more. • Diff Navigation Jump to previous/next difference with one tap. Difference count badges show exactly how many changes were found. • Search in Diff Search for keywords within comparison results to quickly locate specific content. • Export Results Export in four formats: unified diff, HTML report, PDF report, or plain text. Share easily via the system share sheet. • Clipboard Compare Paste text directly from clipboard for comparison — no need to save to a file first. • Drag & Drop Import Drag files directly onto the selection area to import them quickly. • Syntax Highlighting Automatic syntax coloring for 36 programming languages in the diff view: keywords, strings, comments, and numbers at a glance. • Control Center Widget (iOS 18+) Add DiffMaster to Control Center for instant one-tap access. ◆ PERSONALIZATION • Dark / Light Mode — follows system setting or switch manually • 6 Color Styles — Classic Blue, Ocean Green, Warm Orange, Elegant Purple, High Contrast, Rose Pink • Adjustable Font Size — slider control to find your perfect reading size • 8 Languages — English, Chinese, Japanese, German, French, Spanish, Portuguese, Korean with in-app switching ◆ EFFICIENT WORKFLOW • Keyboard Shortcuts — Cmd+Up/Down to navigate diffs, Cmd+F to search, Cmd+E to export • Recent Comparisons — auto-saved history with one-tap re-compare • Diff Statistics — automatic count of added, deleted, and modified lines • Landscape Support — wider comparison view, perfect for iPad • File Access — works with iCloud Drive, Files app, and all document providers ◆ PRIVACY FIRST DiffMaster works entirely offline. No personal data is collected. Files are processed locally on your device and never uploaded to any server. Zero third-party SDKs, zero network connections. ◆ PERFECT FOR • Code Review — compare before and after versions of source code • Document Proofreading — check revisions in Word documents or PDFs • Configuration Comparison — diff between dev, staging, and production configs • Version Tracking — trace changes across different file versions • Learning to Code — compare your solution with reference code ◆ TECHNICAL HIGHLIGHTS • Hirschberg LCS Algorithm — O(n) space complexity, handles 10,000+ line files with ease • Security-Scoped Bookmarks — remembers file access permissions for seamless re-comparison • App Intents — Siri Shortcuts integration Download DiffMaster and never miss a difference!

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Bug fix

Version 1.1.1

The developer, 天美 邬, 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

    Accessibility

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

    Information

    Provider
    • 天美 邬
    Size
    • 2.8 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • iPad
      Requires iPadOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    Languages
    English and 7 more
    • English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish
    Age Rating
    4+
    Copyright
    • © 2026 MayScience. All rights reserved.
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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