WhatChanged – Folder Compare

File compare & diff checker

$9.99

Compare files, folders, and text on iPhone, iPad, and Mac. Spot changes, detect renames, use Safe Merge, and verify with optional SHA-256 — originals stay unchanged. WhatChanged helps you answer one question fast: what’s different? Use one app across iPhone, iPad, and Mac to compare two files, two folders, or text and get a clear summary of changes. On iPhone and iPad, start in the app or send two files from Files straight to WhatChanged. Perfect for backups, exports, cloud drives, builds, and any “did this copy match?” moment. ◼ How to use • In the app Open WhatChanged Choose two files or two folders (Left and Right) Tap Compare • From the share sheet In the Files app, or another app that can share files, select exactly two files Tap Share → WhatChanged The report opens in WhatChanged automatically Tip: The extension is best for file-to-file compare. To compare folders, open the main app. • Direct Text Compare Open the Text tab Paste or type text on both sides Compare instantly, without selecting files first • Text Diff tools Open a text diff from Direct Text Compare, a supported text file, or a folder-pair text diff Use Copy Diff to copy a unified-diff-style result as plain text Use Find in Diff to search inside the current diff, move between matches, and highlight matching rows Review compact Diff Summary badges for total changes, modified rows, added rows, and removed rows Read cleaner results on iPhone and iPad, with polished layout and no-difference states • Safe Merge Run a folder comparison Open Safe Merge Preview Choose a rule: Newest, Oldest, Smallest (New), Smallest (Old), Biggest (New), or Biggest (Old) Review the output folder and safety preview Tap Merge Now to copy the selected results into a new output folder WhatChanged keeps the original folders unchanged Successful merges include a generated README with the compared folders, selected rule, copied items, counts, output location, and safety notes ◼ Highlights • Compare files and folders (left vs right) • Folder compare with added, removed, modified, and renamed items • Safe Merge for folder results • Built-in text diff for Direct Text Compare, supported text files, and folder-pair results • Copy Diff, Find in Diff, row highlighting, and Diff Summary badges • Improved text diff performance for long text comparisons and large replacement blocks • Optional SHA-256 verification for content-level certainty, with caching for faster re-checks • Smart ignore rules: hidden items, extensions, names, and patterns • Text-friendly options: ignore line endings and whitespace-only changes • Preview supported files, keep recent comparisons, and export/share reports • 25 languages, plus an optional in-app language override ◼ Safe by design WhatChanged does not modify or delete your originals. Comparisons are read-only. Safe Merge writes only to a new output folder after you confirm the merge and safety checks pass. ◼ Official website Product information, support, privacy details, and terms are available here: https://hazybyte.studio/whatchanged/ Requires iOS 16.6 or later. Terms of Use: https://hazybyte.studio/whatchanged/terms-of-use/

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What’s New in Version 1.60.0: A Stronger Text Diff Experience on iPhone and iPad This update brings several text comparison improvements to WhatChanged on iOS and iPadOS. Text diff now includes Copy Diff, so you can copy a unified-diff-style result as plain text from Direct Text Compare, file-based text diff, or folder-pair text diff. Find in Diff is now available too. Search inside the current diff, move between matches, and use row-level highlighting to navigate changes more easily. Text diff results also now include compact summary badges for total changes, modified rows, added rows, and removed rows. The diff layout has been polished as well. Results now start near the top of the view, no-difference states feel cleaner, and the text diff view remains easier to read on both iPhone and iPad. This update also brings shared text diff performance improvements, including faster handling for long text comparisons and large replacement blocks. As always, comparisons are read-only. WhatChanged does not modify or delete your original files.

The developer, Iri You, 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, for example, based on the features you use or your age. Learn More

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

    Seller
    • Iri You
    Size
    • 15 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 16.6 or later.
    • iPhone
      Requires iOS 16.6 or later.
    • iPad
      Requires iPadOS 16.6 or later.
    • Mac
      Requires macOS 14.6 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 22 more
    • English, Arabic, Czech, Danish, Dutch, Finnish, French, German, Hebrew, Hindi, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Traditional Chinese, Turkish
    Age Rating
    4+
    Copyright
    • © 2026 HazyByte Studio