Available on Mac App Store & Microsoft Store

The Pro-Level
Diff Comparison Tool
for Everyone.
$14.99 one-time

Mac App Store (US) price. Prices vary by store and region.

Transform Your Diff Workflow!
Tired of hunting for changes in documents?
Worried about missing important edits?
Diff Pro Max solves these problems instantly.

✓ Text comparison is always free ✓ No credit card required ✓ Install in 1 minute
Diff Pro Max - Diff Comparison
Before: main.js
1 class UserService {
2 async getUser(id) {
3 return db.users.find(id);
4 }
5 }
After: main.js
1 class UserService {
2 async getUser(id, options = {}) {
3 const user = await db.users.find(id);
4 if (!user) throw new Error('User not found');
5 return options.cache ? cache.set(id, user) : user;
6 }
7 }
USE CASES

Perfect For These Scenarios

Solving real-world development challenges

📋

Deployment Preparation

"Bundle all changed files from last month"
→ 2-hour task done in 3 minutes

👀

Code Review

"Too many changes in this PR to review"
→ Beautiful syntax highlighting for 150+ languages

🎨

Design Verification

"What exactly changed in this design?"
→ Overlay view reveals even subtle changes

🔄

Version Control

"Which files were updated?"
→ Compare entire folders at once

🎵

Audio Comparison

"Check differences before and after mastering"
→ Visual waveform comparison

🎬

Video Comparison

"Spot differences between video edits"
→ A/B switching and synchronized playback

📄

Document Comparison

"Find what changed in contracts or proposals"
→ Visual diff for PDF, Word, and PowerPoint

📊

Spreadsheet Comparison

"Which cells changed in this spreadsheet?"
→ Cell-level diff detection for Excel files

FEATURES

7 Powerful Comparison Modes

Core features are free and fully usable.
Pro version unlocks unlimited access to everything.

Diff Pro Max Main Menu

7 Comparison Modes

Choose from text, folder, image, audio, video, document, and Excel comparison modes

Text Comparison

High-Precision Text Comparison

Syntax highlighting for 150+ languages

Folder Comparison

Folder Structure Comparison

Visualize directory structure changes

Deployment Data Creation

Auto Deployment Data Creation

Extract changed files by date range

Image Comparison

Image Overlay Comparison

Spot even the smallest design changes

Audio Comparison

Audio Waveform Comparison

Visually compare audio files with synchronized playback

Video Comparison

Video Comparison

A/B switching and synchronized playback to spot differences

Document Comparison

Document Comparison

Visual diff for PDF, Word, and PowerPoint documents

Excel Comparison

Excel Comparison

Cell-level diff detection for spreadsheets

📝

Text Comparison Always Free

Syntax highlighting for 150+ languages.
• Side-by-side / Inline / Hunk View
• Character-level diff detection
• Whitespace visualization
• Line numbers and jump navigation
✨ Unlimited use even in free version

📁

Folder Comparison 3/day

Instantly compare directory structures.
• Color-coded added/changed/deleted files
• Filter by file type
• Size and modification date display
• Export to CSV/HTML (Pro)
💎 Unlimited with Pro

🖼️

Image Comparison 3/day

Visually verify design differences.
• Overlay view for layered comparison
• Split view for side-by-side
• Opacity adjustment & synchronized zoom
• PNG, JPG, SVG, WebP support
💎 Unlimited with Pro

📤

Deployment Data 3/day

Auto-extract changed files by date range.
• Specify date range for diff extraction
• Preserve directory structure
• Generate organized deployment data instantly
• Dramatically streamline deployment workflow
💎 Unlimited with Pro

🎵

Audio Comparison 3/day

Visually compare audio files.
• Waveform display for side-by-side comparison
• Synchronized playback to hear differences
• Metadata comparison (duration, sample rate, etc.)
• MP3, WAV, FLAC, AAC support
💎 Unlimited with Pro

🎬

Video Comparison 3/day

Compare video files side by side.
• A/B switching to spot differences
• Synchronized playback for frame-level comparison
• Metadata comparison (resolution, duration, etc.)
• MP4, WebM, MOV, AVI, MKV support
💎 Unlimited with Pro

📄

Document Comparison 3/day

Visual diff for documents.
• Page-level visual diff detection
• Diff overlay display
• Page sync & scroll sync
• PDF, DOCX, PPTX support
💎 Unlimited with Pro

📊

Excel Comparison 3/day

Cell-level diff for spreadsheets.
• Color-coded added/changed/deleted cells
• Cross-sheet comparison
• Multiple comparison modes
• XLSX format support
💎 Unlimited with Pro

🎯

Pro-Only Features PRO ONLY

$14.99 for lifetime access
• All features unlimited
• Export to CSV, HTML, PDF
• Advanced filtering options
• Preset save & management
• Unlimited history storage

💾

Multiple Export Formats

Export comparison results in various formats.
• Free: Text format
• Pro: CSV, HTML, PDF support
• Save filter settings
• Export file lists
• Powerful report generation

VERSION MANAGEMENT

Version Management with Snapshots

More than just comparing files.
Track file changes over time with snapshots.

1
📸

Save Snapshots

Capture the state of any file at any time. Supports all file types: text, images, audio, video, documents, and Excel.

→
2
📁

Organize by Group

Create change groups for each project or task. Keep related files organized together.

→
3
🔍

Review Changes

Instantly compare past versions with current files. Know exactly what changed and when.

Free

1 group / 3 versions / 3 history

Pro

5 groups / 8 versions / 8 history

Pro + Add-on

Unlimited
Add-on +$9.99

COMPARISON

Free vs Pro

Free is great for basics. Pro is best for power users.

Feature Free Pro ($14.99)
Text Comparison ✓ Unlimited ✓ Unlimited
Folder Comparison 3 times/day ✓ Unlimited
Image Comparison 3 times/day ✓ Unlimited
Deployment Data 3 times/day ✓ Unlimited
Audio Comparison 3 times/day ✓ Unlimited
Video Comparison 3 times/day ✓ Unlimited
Document Comparison 3 times/day ✓ Unlimited
Excel Comparison 3 times/day ✓ Unlimited
Change Groups 1 group / 3 versions ✓ Expandable (Add-on +$9.99)
Syntax Highlighting ✓ 150+ languages ✓ 150+ languages
Export Formats TXT only TXT, CSV, HTML, PDF
History Storage Up to 5 ✓ Unlimited
Advanced Filtering ✗ ✓
Preset Saving ✗ ✓
Price $0 $14.99 (one-time)
Mac App Store (US)
PRICING

Simple, Transparent Pricing

Buy once, use forever.

⚠️ Price Notice
Prices on this page are Mac App Store (US) prices and may change in the future.
Prices differ by country and by store. On the Microsoft Store, prices are converted from the Japanese yen base price — in the US that is higher than the Mac App Store price shown here.
The exact amount for your store and region is shown before you confirm the purchase.

Free

$0
Free Forever
  • Text Comparison (Unlimited)
  • Folder Comparison (3/day)
  • Image Comparison (3/day)
  • Audio Comparison (3/day)
  • Video Comparison (3/day)
  • Document Comparison (3/day)
  • Excel Comparison (3/day)
  • Deployment Data (3/day)
  • Change Groups (1 group / 3 versions)
  • 150+ Language Syntax Highlighting
  • Text Format Export
  • History Storage (Up to 5)

Pro

$14.99
One-time (Lifetime License)
Mac App Store (US)
  • All Features Unlimited
  • Video Comparison & A/B Switching
  • Document Comparison (PDF/Word/PowerPoint)
  • Excel Comparison & Cell-level Diff
  • Change Groups (Unlimited with Add-on +$9.99)
  • Audio Comparison & Waveform Display
  • Advanced Filtering Options
  • Exclusion Pattern Settings
  • CSV/HTML/PDF Export
  • Preset Save & Management
  • Unlimited History Storage
FAQ

Frequently Asked Questions

Is it really a $14.99 one-time purchase? ⌄
Yes — $14.99 is the Mac App Store (US) price, and it is a one-time purchase. Prices differ on the Microsoft Store and by region. Once purchased, you get access to all Pro features. Future updates are also free. While we may introduce subscription features in the future, existing features will never be moved to subscription.
Is the free version useful enough? ⌄
Yes, text comparison is free forever and unlimited. Folder, image, audio, video, document, Excel, and deployment data comparison are also free up to 3 times per day. Try the free version first, then consider upgrading to Pro if needed.
What file formats are supported? ⌄
Text comparison supports 150+ programming languages. Image comparison supports PNG, JPG, SVG, WebP and other major formats. Video comparison supports MP4, WebM, MOV, AVI, MKV. Audio comparison supports MP3, WAV, FLAC, AAC. Document comparison supports PDF, DOCX (Word), and PPTX (PowerPoint). Excel comparison supports XLSX format. Folder comparison can detect differences in any file type.
Does it work on Windows? ⌄
Yes! Both Mac and Windows are supported.
Mac version is available on Mac App Store, Windows version on Microsoft Store. Linux support may be considered based on future demand.
Is there post-purchase support? ⌄
Pro version purchasers receive continuous updates and feature improvements. While not currently available, we plan to add in-app help documentation and FAQ in the future.

No More Diff Comparison Headaches

Cut 2-hour tasks down to 3 minutes.
Eliminate missed changes in code reviews.
Dramatically boost your productivity with Diff Pro Max today.