Simple, Honest Pricing
Start free. No credit card required. Upgrade when you need more — or own it forever offline.
Free
$0/month
Perfect for occasional use
Get Started Free- 30 comparisons per month
- Smart page matching
- Character-level diff highlighting
- Side-by-side synchronized viewer
- Inserted / deleted page detection
- Export comparison to PDF
Base
$1.99/month
Unlimited access, no AI needed
14-day free trial — no credit card required
- Unlimited comparisons
- Smart page matching
- Character-level diff highlighting
- Side-by-side synchronized viewer
- Inserted / deleted page detection
- OCR for scanned / image-based PDFs
- Export comparison to PDF
- Annotate changes with notes
✓ 14-day free trial · ✓ Cancel anytime · ✓ No contracts
WITH AI
Pro
$3.99/month
Base + AI summaries & BYOK.
14-day free trial — no credit card required
- Everything in Base
- AI-powered change summaries
- AI-enhanced matching accuracy
- Bring your own API key (BYOK)
- Priority processing
✓ 14-day free trial · ✓ Cancel anytime · ✓ No contracts
Offline / Desktop
Own it forever. One-time payment — $1 per machine license, not a subscription.
- Unlimited local comparisons
- Smart page matching
- Character-level diff + PDF highlights
- Side-by-side synchronized viewer
- Export comparison to PDF
- No internet required — fully offline
- No data leaves your machine
- Free updates for local features — forever
- $1 per machine license
✓ Windows · Mac · Linux · ✓ No cloud · ✓ Free updates forever
How we compare to alternatives
| Feature | CatchDiff Pro | CatchDiff Offline | Adobe Acrobat | Wondershare |
|---|---|---|---|---|
| Smart page matching | ✓ Yes | ✓ Yes | ✗ No | ✗ No |
| AI-enhanced accuracy | ✓ Yes | ✗ No | – Limited | ✗ No |
| OCR for scanned PDFs | ✓ Yes | ✗ No | ✓ Yes | – Paid add-on |
| Export to PDF | ✓ Yes | ✓ Yes | ✓ Yes | – Paid add-on |
| Works offline / no cloud | ✗ No | ✓ Yes | ✗ No | ✗ No |
| Price | $3.99/mo | $1–$19.99 once | $19.99/mo | $9.99/mo |