The on-device redaction alternative to Adobe Acrobat.
Silo Redact is a 100% on-device PDF redaction tool for macOS and a one-time-purchase alternative to subscription PDF suites. The current build provides local redaction and verification; the structured evidence workflow below is coming in version 1.3.0.
Silo Redact vs Adobe Acrobat.
on-device · vs cloud| Dimension | Silo Redact | PDF suites (Adobe Acrobat) |
|---|---|---|
| Where it runs | On your Mac (offline, loopback only) | Desktop app + Adobe cloud services |
| Pricing | One-time $39.99 | Monthly subscription |
| Verification artifact (v1.3.0, in preparation) | Separate report with extraction, OCR, metadata, carve, and SHA-256 checks | Workflow varies by suite |
| On a failed re-check (v1.3.0, in preparation) | Quarantined as -FAILED-DO-NOT-SEND | Workflow varies by suite |
| Detection review (v1.3.0, in preparation) | Page-linked source boxes, confidence, reason, and origin | Product-specific |
| Metadata (v1.3.0, in preparation) | Purged, then audited after export | Product-specific |
| Account | None required | Adobe ID |
| Works without internet | Yes | Cloud features need a connection |
Cloud column reflects the typical architecture of Adobe Acrobat and similar hosted tools. Names are trademarks of their owners; not affiliated.
Adobe Acrobat alternative, answered.
Silo Redact · on-deviceThe current build keeps redaction and verification on your Mac. Version 1.3.0, now in preparation and not in the current App Store build, adds exact page-linked evidence and the expanded extraction, re-OCR, metadata, carve, and SHA-256 report with separate PDF and report saves.
No. A Swift host launches a bundled backend on 127.0.0.1 and all processing stays on loopback — detection, burn-in, and verification run entirely on your Mac, with no account and no data collected.
No. Silo Redact is a one-time $39.99 purchase. Adobe Acrobat Pro, which includes its redaction tools, is a recurring monthly subscription.
On-device detection surfaces SSNs, card and routing numbers, EINs, emails, phones, dates, PDF form-field values, OCR'd text from scans, and names — plus an optional local model for context. You review every suggestion before anything is burned in.
Keep your work on your Mac.
Silo Redact is a one-time $39.99 purchase on the Mac App Store. No subscription, no account, nothing uploaded — a private, on-device alternative to Adobe Acrobat.