Fileduel - Compare files

ValueSpring

In-app purchases

About this app

FileDuel puts two files side by side and shows you exactly what changed — every added line, every deleted word, every modified cell. No guesswork, no scrolling back and forth manually.

Whether you're reviewing a contract redline, reconciling two Excel reports, tracking changes in a code file, or comparing scanned documents — FileDuel handles it in seconds.

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WHAT YOU CAN COMPARE
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📄 Text & Documents — .txt, .docx, .md, XML, code files, EDI, and more
📊 Excel Spreadsheets — compare cells, formulas, and sheet structure across .xlsx files
📑 PDF Files — extract and compare text content across pages (Beta)
📷 Photos & Scans — photograph a printed document and compare against another

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HOW IT WORKS
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1. Pick File A and File B — from your device or paste text directly
2. Tap Compare
3. See every change highlighted — added lines in green, removed in red, modified in amber

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KEY FEATURES
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✦ Word-level and character-level diff — see exactly which words changed, not just which lines
✦ Split view and unified view — choose the layout that works for you
✦ Portrait and landscape support — full screen real estate in any orientation
✦ Excel sheet mapping — match sheets across two files, column-by-column comparison
✦ Formula diff — see what Excel formulas changed, not just cell values
✦ PDF page navigation — jump to changed pages instantly
✦ Find in diff — search within your comparison results
✦ Export results — share as HTML, CSV, or JSON
✦ Scroll sync — both panes move together for easy line-by-line review
✦ Dark mode — full dark theme that's easy on the eyes

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100% ON-DEVICE PRIVACY
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Your files never leave your phone. FileDuel runs entirely on-device — no uploads, no cloud processing, no accounts required. What you compare stays on your device, period.

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BUILT FOR
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→ Legal & compliance teams reviewing contract versions
→ Finance teams reconciling Excel reports
→ Developers comparing config files and code
→ Writers tracking document revisions
→ Anyone who needs to know exactly what changed between two versions of anything

FileDuel. Two files. Every change.

What’s new

First release of FileDuel - document comparison made simple.
Compare text, code, CSV and EDI files free, forever
Excel and PDF diff with Pro
Export results as HTML or patch files
Regex ignore rules to filter out noise (timestamps, IDs)
Semantic diff for paragraph-level comparison
100% on device - no uploads no account