Archi — Paperless Scanner

Now with GPU-accelerated on-device AI. Share PDFs straight into Archi, scan in batches, and pick or create document types on the fly.

Archi is the Paperless-NGX client for iPhone that runs AI and OCR entirely on your device — no cloud subscription, no data sharing, zero privacy compromises.

Note: AI metadata extraction requires a one-time download of the Gemma 4 model (approx. 2.4 GB) after installation.

■ WHAT ARCHI DOES

Scan a document, recognise text, extract metadata — all in seconds, all locally. The document then lands neatly categorised in your self-hosted Paperless-NGX server.

■ ON YOUR DEVICE, NOT IN THE CLOUD

• OCR with Apple Vision — fast, offline, free • AI metadata extraction with Google's Gemma 4 — runs directly on your iPhone, no server needed • Automatic title, tag and correspondent suggestions based on content • Import PDFs and images from other apps via the Share sheet

■ PAPERLESS-NGX INTEGRATION

• Browse and manage your entire document archive • Full-text search across all documents • Filter by tags, document type and correspondent • Offline queue — scans saved locally until you're back online

■ REAL-WORLD USE CASES

Tax Returns: Scan every receipt, invoice and bill as it arrives. Archi automatically recognises the date, vendor and amount — and suggests the right tags. Come January, your self-assessment paperwork is already organised.

Home Office & Business: Incoming invoices, delivery notes, contracts — Archi reads the document and proposes correspondent, document type and filing date without you lifting a finger.

Medical & Insurance: Digitise NHS letters, insurance policies, prescription records and medical documents securely. Your health data never leaves your device.

No Wi-Fi? No Problem: Scan documents underground, in thick-walled archives or abroad without mobile data. Archi queues everything locally and syncs automatically when connectivity returns — unlike server-dependent alternatives.

Homelab & Self-Hosting: Running Paperless-NGX on a Synology NAS, Proxmox, Docker or a Raspberry Pi? Archi was built for exactly your setup. No third-party SaaS, no monthly fees, no vendor lock-in.

■ PRIVACY FIRST

One-time purchase. Zero subscriptions. Zero cloud. Zero data collection. Your documents stay on your device and your server — and nowhere else.

All AI processing, all OCR, all metadata extraction runs exclusively on your iPhone. Archi never transmits document content to any external server — not Apple's, not Google's, not ours.

■ TECHNICAL DETAILS

• AI model: Gemma 4 E2B INT4 (Google open weights) — runs fully on-device via LiteRT, Metal GPU accelerated • OCR: Apple Vision Framework — free, offline, privacy-preserving • Backend: Paperless-NGX (self-hosted, URL and token fully configurable) • Offline queue: SQLite-based, zero data loss when offline • Recommended hardware: iPhone 15 Pro or newer (6 GB RAM)

Archi requires a self-hosted Paperless-NGX server.