Folders were never the answer
Everyone has the same system for important documents: some in email attachments, some in a photos app, some in a drawer, and one crucial scan on a laptop that got replaced. When a landlord, border officer or accountant asks for a specific document, the search takes an evening.
The vault replaces that with one place and one habit. Upload a document once, and AI does the librarian work: recognizes whether it is a passport, contract, invoice or policy, extracts names, numbers and dates, and files it under a readable title. From then on the document is findable by anything it contains, not by whatever the scanner named the file.
Ask, don't browse
The search box takes questions, not keywords. "How much is my rent according to the lease?" pulls the lease, finds the amount and answers with it. "Which documents expire this year?" checks the extracted dates across everything you stored. Simple lookups by title are free; when a question needs AI reasoning over document contents, it costs a small credit fee shown up front, the same system as the rest of the AI tools.
The vault syncs between this site and the DocFather iOS app, so a contract uploaded from your desk is in your pocket at the notary. Dates the vault extracts also power the expiry tracker, which turns "I should remember to renew that" into an actual answer.