Compare up to 3 files.
Side by side.
The only Mac diff tool that lets you compare 3 files at once. Perfect for reviewing multiple versions, resolving conflicts, or tracking changes across drafts. Just drop your files and see every difference instantly.
Most diff tools only compare 2 files. What about the third?
When you have an original plus two different edits — like reviewing competing revisions, checking your changes against a colleague's, or comparing multiple contract versions — you need to see all three at once. LineWise is the only tool that shows you the complete picture.
Built for clarity, not complexity
3-Way Comparison
Compare up to 3 files simultaneously — a feature most diff tools lack. Perfect for base-vs-two-versions workflows, merge conflicts, and multi-author reviews.
Drop & Compare
Drag your files into the app. Instantly see them side-by-side with differences highlighted. No project setup required.
Clear Visual Diff
Added lines in green, removed in red, modified in yellow. Soft colors that are easy on the eyes, even for long documents.
Synchronized Scrolling
All columns scroll together so you never lose your place. Line numbers keep you oriented.
Native Mac App
Built with SwiftUI for macOS. Fast, lightweight, and feels right at home on your Mac.
Perfect for
Compare configs, logs, and text outputs
Compare paper drafts and revisions
Review contract changes and redlines
Track manuscript revisions
Compare policy and document versions
Simple pricing. No subscriptions.
One-time purchase. Yours forever.
- ✓ 3-way comparison — compare 3 files at once
- ✓ Visual diff highlighting (added/removed/modified)
- ✓ Synchronized scrolling across all columns
- ✓ Native macOS experience
- ✓ CLI support — launch from terminal
- ✓ Free updates
Ready to compare with clarity?
Requires macOS 14 (Sonoma) or later