Document scanning on Android has matured fast. Edge detection is now AI-powered. OCR runs offline on-device. Some apps still want your contracts uploaded to a cloud you don't control — others keep everything local. We tested the six most-installed scanner apps to find the right one for every use case.
Quick TL;DR: Doczio wins for productivity-first users, DocLensPro wins for privacy-first users, Adobe Scan wins if you live in the Adobe ecosystem.
1. Doczio All Docs Editor — Best Overall
Score: 9.2/10 · 133K+ installs · 4.1★ rating
Doczio combines a competent document scanner with a full PDF reader/editor, format converter, and AI writing assistant. The scanner uses AI-powered edge detection, supports multi-page scans, OCR in 6+ languages (Hebrew, Arabic, CJK), and exports searchable PDFs. What sets it apart: you can scan, OCR, sign, edit, and convert — all in one app instead of stitching together five.
- AI edge detection + auto perspective correction
- Multi-page scanning with reorder
- OCR with RTL language support
- Built-in PDF editor (no need for second app)
- Google Drive, OneDrive, Dropbox sync
2. DocLensPro — Best for Privacy
Score: 8.7/10 · Open-source (Apache 2.0)
DocLensPro is the rare scanner that doesn't want your documents on its servers. Edge detection uses OpenCV + a custom ONNX inference model. Tesseract OCR runs entirely offline. The app is F-Droid compliant — meaning it's buildable from source without proprietary binaries. If you scan tax documents, IDs, or anything sensitive, this is the only option that won't silently route your data through a third-party cloud.
- 100% offline OCR (Tesseract)
- Open-source — audit the code yourself
- No account required
- Material 3 dark mode
3. Adobe Scan — Best for Adobe Ecosystem
Score: 8.5/10 · 100M+ installs
Adobe Scan is the de-facto choice if you already use Adobe Document Cloud or Acrobat Pro. Auto-capture, perspective correction, and OCR are all reliable. The catch: every scan syncs to Adobe Document Cloud by default — fine for some, dealbreaker for those scanning sensitive documents.
4. Microsoft Lens — Best Free Alternative
Score: 8.3/10 · 100M+ installs
Microsoft Lens is genuinely good — and free. Strong for whiteboard scanning (geometric perspective correction is excellent) and integrates tightly with OneDrive, OneNote, Word. Less polished than Adobe Scan but covers 90% of use cases at no cost.
5. AnyPDF (PDF Editor & Files Manager) — Best for Heavy PDF Users
Score: 8.3/10 · 33K+ installs · 4.1★ rating
AnyPDF combines scanning, PDF reading, and file management. Good edge detection, decent OCR, plus the ability to edit and sign the scanned PDFs without exporting to another app. If your workflow is more "open many PDFs" than "scan many documents", this beats pure scanners.
6. CamScanner — Avoid in 2026
Score: 5.0/10
CamScanner had a famous malware incident in 2019. It's patched, but the freemium model is now extremely aggressive (watermarks, daily scan limits, $50/year for basic features). Too many free alternatives exist. Skip.
Quick Recommendations
- For most people: Doczio — best balance of features, free tier, multi-language OCR
- For sensitive documents: DocLensPro — offline-only, open-source
- If you're in Adobe: Adobe Scan — tight Document Cloud integration
- If you scan whiteboards: Microsoft Lens — best geometric correction
- If you edit lots of PDFs: AnyPDF — scanner + editor in one
Whichever you pick, do yourself a favor: install one good scanner and stop using your camera roll as a filing cabinet.