CaseSealScan documents into tamper-evident evidence. On your phone, never in the cloud.
CaseSeal is a private PDF scanner that turns paper into sealed, numbered exhibits. Every page is fingerprinted with SHA-256 the moment you capture it, timestamped, and written to a chain-of-custody log, so you can show later that a document is exactly what you scanned.
How it works
1. Scan or import
Scan paper with the iPhone document camera, capture book spreads, or import photos and PDFs. Imported PDFs are kept byte-for-byte.
2. Sealed instantly
Each page gets a SHA-256 hash and an exhibit number. Text is recognised on the device, so every PDF is searchable.
3. Every action logged
Renames, signatures, verifications and exports are added to an append-only, hash-chained custody log with time, device and app version.
4. Share a packet
Export an evidence packet: cover page, exhibit index, stamped exhibits and a hash manifest, plus CSV and JSON.
Who uses CaseSeal
Tenants and landlords
Leases, notices, repair requests and deposit receipts for a housing dispute, organised by case.
Insurance claims
Receipts, estimates and invoices for a claim, with an expense report that totals them automatically.
HR investigations
Statements and records with a clear history of who changed what, and when.
Paralegals and small firms
Numbered exhibits, an exhibit index and a hash manifest without a desktop scanner.
Features
- Evidence-grade PDF scanner with automatic edge detection and on-device OCR
- SHA-256 hashes for every page and every version, verifiable with standard tools
- Chain-of-custody log that can only grow; edits, deletions and reordering are detected
- Searchable PDFs and full-text search across every case, even offline
- Signatures and annotations saved as new linked versions; the original never changes
- Exports: evidence packet PDF, CSV and JSON manifests, text, images, .docx, .pptx, merged PDFs and expense reports
- QR code reader, text-only scanning and book mode
- Face ID lock and iOS Complete file protection
No account, no server, no analytics and no tracking. Scanning, OCR, hashing and PDF creation all run on your iPhone. App Store privacy label: Data Not Collected. Read the privacy policy.
Questions
What is a SHA-256 hash and why does it matter?
It is a fingerprint of a file's exact contents. Change one pixel and the fingerprint changes completely. CaseSeal records it at capture, so anyone can later check that a document has not been altered.
Does CaseSeal upload my documents?
No. Everything is processed and stored on your iPhone. Files leave the app only when you choose to share them.
Is a CaseSeal record admissible in court?
CaseSeal produces records that support authenticity, but admissibility depends on your jurisdiction's rules. It is not legal advice.
How much does it cost?
The free version includes 1 case and 5 exhibits with scanning, OCR, search, hashing and custody logs. A one-time Pro purchase unlocks unlimited cases, evidence packets, signatures and advanced exports.