The latest articles on DEV Community by fan ei (@fan_ei_bc365d7c81ba45eed9). https://dev.to/fan_ei_bc365d7c81ba45eed9 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3871209%2Fdb2a192f-84f0-46a5-9725-f8ee0d79f63d.jpg https://dev.to/fan_ei_bc365d7c81ba45eed9 en fan ei Fri, 10 Apr 2026 07:41:29 +0000 https://dev.to/fan_ei_bc365d7c81ba45eed9/i-built-a-100-free-document-scanner-app-no-ads-no-watermarks-8ke https://dev.to/fan_ei_bc365d7c81ba45eed9/i-built-a-100-free-document-scanner-app-no-ads-no-watermarks-8ke <h2> Why I Built SmartScan </h2> <p>Every document scanner app I've tried is the same: ads everywhere, watermarks on every page, and a paywall hiding basic features. So I built my own.</p> <h2> What It Does </h2> <p>SmartScan is a completely free Android app that lets you:</p> <ul> <li> <strong>Scan documents to PDF</strong> — Fast edge detection, multi-page support</li> <li> <strong>QR Code Generator &amp; Scanner</strong> — Create and scan QR codes instantly</li> <li> <strong>OCR Text Recognition</strong> — Extract text from images</li> <li> <strong>Edit &amp; Sign Documents</strong> — Add signatures, annotations</li> <li> <strong>Share anywhere</strong> — Export as PDF or image</li> </ul> <h2> What Makes It Different </h2> <ul> <li>100% free</li> <li>Zero ads</li> <li>No watermarks</li> <li>No account required</li> <li>Open source (Kotlin/Android)</li> </ul> <h2> Tech Stack </h2> <p>Built natively with Kotlin for Android. Source code available on GitHub.</p> <h2> Try It </h2> <p><strong>Google Play:</strong> <a href="https://play.google.com/store/apps/details?id=com.smartscan.smartscan" rel="noopener noreferrer">https://play.google.com/store/apps/details?id=com.smartscan.smartscan</a></p> <p><strong>GitHub:</strong> <a href="https://github.com/fanei/scan" rel="noopener noreferrer">https://github.com/fanei/scan</a></p> <p>I'd love to hear your feedback! What features would you want in a scanner app?</p> androidopensourceproductivity