Match across file formats
Embedded PDF text, Vision OCR, page coverage, SHA-256, and visual fingerprints find likely representations even when names differ.
Private document identity review
Keep the smallest safe set. Lose no useful evidence.
Compare PDFs, scans, and document photos locally, review why they may represent the same document, and export a separate verified result.
No account · No cloud AI · No source deletion
Features
Preserve a minimum safe set
A suggested set keeps every detected page, searchable text source, and visible difference. Several files can stay when each adds evidence.
Make every final decision
Compare candidates, use the safe set, keep all, mark different documents, decide later, or undo. Unresolved files remain included.
Export verified copies
Build a separate safe-set folder and PDF audit. Pro adds ZIP, CSV, JSON, and SHA256SUMS. Included copies pass SHA-256 verification.
A conservative document workflow
Choose a folder, individual files, or selected document photos through Apple's system pickers.
Review each candidate group and the evidence that connects or distinguishes its files.
Confirm the safe set and create a new result without writing back to any selected source.
Local by design
Document content, OCR, fingerprints, grouping, decisions, and exports stay on device. There is no developer document backend, analytics, tracking, or third-party AI service.
A complete free workflow. One-time Pro.
Free scans include up to 20 files and 100 pages, review, a verified safe-set folder, and PDF audit. SourceTwin Pro Lifetime is a non-consumable purchase for up to 500 files and 2,000 pages, identity memory, ZIP, complete machine-readable audits, and local result history. No subscription. Apple shows the current local price before confirmation.
com.vshia.sourcetwin.pro.lifetime
FAQ
Does SourceTwin delete or clean my source folder?
No. It copies only selected items into a private workspace and creates a separate result. It does not offer a source-delete action.
Does AI decide which document is authoritative?
No. Deterministic local evidence creates the suggestion. On eligible devices, Apple Intelligence may phrase those facts, but it cannot change the group or safe set.
Does document analysis work without a SourceTwin server?
Yes. Import analysis, OCR, grouping, review, verification, and export use no SourceTwin server. StoreKit and public web pages need connectivity when used.
Can SourceTwin authenticate a signature or legal original?
No. Visible marks may be preserved as differences, but SourceTwin does not identify a signer, authenticate a signature, certify completeness, or provide legal advice.
Understand what should stay before making another copy.
SourceTwin AI is designed for supported iPhone and iPad devices. Availability and the current local purchase price are shown by the App Store.