Lumen - Document Scanner OCR

Big Bang Software

In-app purchases

About this app

Lumen turns your phone into a fast, private document scanner. Scan receipts, contracts, notes, ID cards, whiteboards and more into crisp, professional PDFs — and every scan stays right on your device. No ads. No data collection.


WHY LUMEN
Lumen was an initiative to create a MS Lens alternative. Scan, save and share with the world. You are 100% in control of your data. Your scans never leave your phone unless you choose to share them. It's a scanner built around your privacy.

SCAN ANYTHING
▸ Automatic edge detection finds the page for you
▸ Capture many pages into a single document
▸ Document, ID card and QR code modes
▸ Clean color, grayscale and black-and-white looks for sharp, readable pages

EXPORT TO PDF & MORE
▸ Save as PDF, JPEG or PNG — free
▸ Export searchable PDF, Word (DOCX) and Text (TXT) with Lumen Pro
▸ Share to any app, save to your files, or print in a tap

READ & SEARCH YOUR DOCUMENTS (OCR)
▸ On-device text recognition lifts the words right off your scans
▸ Make searchable PDFs you can select, copy and highlight
▸ Find any document instantly by the text inside it

SMART TOOLS THAT SAVE TIME
▸ Turn a business card into a phone contact
▸ Turn a receipt into a tidy spreadsheet (CSV)
▸ Translate scanned text — right on your device
▸ Mark up pages with text and stickers

STAY ORGANIZED
▸ Sort, tag and group your documents
▸ Select several at once and export them together
▸ A beautiful library that works the way you do

BUILT FOR EVERY SCREEN
▸ Phones, tablets, foldables and Chromebooks
▸ Roomy two-pane layout on big screens, with drag-and-drop import
▸ Start a scan from your Wear OS watch
▸ Dark mode, color themes and alternate app icons

YOUR PRIVACY, BY DESIGN
✓ No account is necessary
✓ Works offline
✓ No ads, no trackers, no analytics
✓ We don't collect or sell your personal data
✓ You are 100% in control of your scans and data

LUMEN PRO
Unlock the full toolkit with an optional upgrade:
• Text recognition (OCR) and searchable PDFs
• Word (DOCX) and Text (TXT) export
• Business-card-to-contact and receipt-to-CSV
• Premium stickers, themes and app icons
• Batch export and watermark-free PDFs

Scan your first document in seconds — privately, beautifully, and share with the world. Download Lumen today.