Sorted automatically
Filum recognizes a passport, a lease, a tax form — and files it by type the moment you scan it.
A zero-knowledge vault · iPhone
Your documents,
cached and
sealed.
Filum files the documents you can't afford to lose — passports, IDs, records — with on-device AI, then seals them with zero-knowledge encryption. They never leave your iPhone unencrypted. No one can read them. Especially not us.
Filum
Encrypted
- passport.pdfsealed
- residence-permit.pdfsealed
- birth-certificate.pdfsealed
- vaccination-record.pdfsealed
Your key
7F2A·9C41·B0E8·55D3
We store
a3f9c2…e17b ciphertext
On-device intelligence
It files itself.
Snap a document and Filum reads it with Apple's on-device AI — sorting it by type, pulling out the dates and numbers that matter, and making everything searchable. The intelligence runs entirely on your iPhone. Our servers never see a word of it.
Key fields, extracted
Numbers, names, and expiry dates are pulled out and structured — a document becomes data you can act on.
Expiry radar
Filum tracks renewals — passports, visas, residence permits — and warns you before they lapse.
Instantly searchable
Full-text search across your whole vault, right on your device — even offline.
How your key works
Encryption happens on your device.
Every file is encrypted with AES-256-GCM on your iPhone before it syncs. We store only ciphertext — a server breach exposes encrypted blobs, never your documents.
- 01 Your file, on your iPhone
- 02 Sealed with AES-256-GCM · keys never reach our servers
- 03 We store only ciphertext
Only you hold the key
Your keys are derived on your iPhone, in the Secure Enclave, and never sent to us. The one way back into your vault is a 24-word recovery phrase — yours alone. We can't recover it for you, and that's exactly the point.
Sealed before it syncs
Documents are encrypted on your device before they ever reach us. Nothing leaves your iPhone unencrypted.
Yours to keep
Export your whole vault any time. No lock-in, no hostages.
AES-256-GCM authenticated encryption, with a fresh key for every document.
Open core
Filum's encryption core, filum-crypto, is open source (MIT) — read it, don't take our word.
Zero-access by design
What we can't see.
End-to-end means the vault is sealed before it reaches us — including its filenames, types, and fields. Here's exactly where that line falls, and the little we do see.
Capability
You
US
Read your documents
Yes
Never
See filenames, types, or fields
Yes
Never
Hold your encryption key
Yes
Never
See blob sizes & sync times
—
Yes
Inspect the crypto core
Yes
Yes
The only thing our servers ever hold is ciphertext plus the sizes and timestamps needed to sync it — never your document content or metadata.
Keep what matters, sealed.
Filum is in open beta for iPhone. Join on TestFlight and start sealing your documents today.
Download beta on
TestFlight