Offline PDF Editor vs STLLens

ProperPDF is the PDF editor that never uploads your files. Every tool runs 100% on your device - no internet connection required, no cloud servers involved, no account needed. WHY PROPERPDF? Your documents contain sensitive information - contracts, tax forms, medical records, school assignments. Most PDF apps upload your files to remote servers for processing. ProperPDF processes everything locally on your device. Your files never leave your phone. COMPLETE PDF TOOLKIT - Merge & Combine - Join multiple PDFs into one document - Split & Extract - Pull out specific pages or page ranges - Compress - Reduce file size without losing quality - Convert - PDF to JPG, PNG, or image to PDF - Lock & Unlock - Add or remove password protection - Sign - Draw or type your signature directly on any PDF - Fill Forms - Complete PDF forms on your phone - Rotate, Reorder & Delete - Organize pages exactly how you need them - Edit Metadata - Update document title, author, and properties - View & Read - Fast, smooth PDF reader with zoom and navigation AI-POWERED PDF CHAT Ask questions about your documents and get instant answers. Summarize lengthy reports, extract key points, or search through content - all powered by on-device AI. Your conversations stay private because the AI runs locally on your phone. BUILT FOR PRIVACY - Zero cloud uploads - files never leave your device - Zero internet required - works in airplane mode - Zero accounts needed - no sign-up, no tracking - Zero data collection - we don't see your documents PERFECT FOR Students - annotate textbooks, merge lecture notes, compress assignments Professionals - sign contracts, fill forms, organize documents Anyone - handle everyday PDF tasks without trusting a cloud server WORKS OFFLINE. ALWAYS. No Wi-Fi? No problem. Every feature works without an internet connection. Whether you're on a flight, in a meeting, or somewhere without service - ProperPDF has you covered. Download ProperPDF - the PDF editor that respects your privacy. Privacy Policy: https://tryproperpdf.app/privacy-policy Terms of Service: https://tryproperpdf.app/terms-of-service

Meshlet is a fast local 3D file viewer for STL and OBJ models on iPhone and iPad. Open files from the Files app, inspect mesh structure, switch display modes, and save snapshots for sharing. Built for quick viewing, not heavy CAD editing. Key features: • Open STL and OBJ files from Files • Solid, Wireframe, and X-Ray display modes • Camera presets for top, front, side, and isometric views • Mesh stats and bounds preview • Save and share model snapshots • Reopen models from Recents Year VIP: $14.99. Monthly VIP: $7.99. Lifetime : $19.99. YearLy VIP,Monthly VIP supports Family Sharing. ELUA： https://alluring-cornucopia-e64.notion.site/EULA-1b93a026438880b2b7bff9c491893917?pvs=74 Email： personalbum@outlook.com