STS2 vs PDF Library & Reader

Smart Tunnelling System is a practical application specially designed for the tunnel construction industry. STS provides shield construction enterprises with comprehensive data collection, storage, monitoring and intelligent decision-making services based on big data analysis. It mainly realizes the functions of remote real-time monitoring, tunneling progress control, report management, statistical analysis and business management of roadheader cluster.

PDF Library & Reader is a minimalist, offline PDF reader that gives you full control over your reading experience. Import PDF books, track your progress, and read distraction-free. No signup required. FEATURES: • Add PDFs instantly Import PDFs from anywhere (Files, Safari, AirDrop, etc) into your personal library with a single tap. • Track your reading progress Progress is automatically saved as you scroll. See what you’ve started and pick up where you left off, even after closing the app. • Rename book titles Swipe left on a title in your library to give it a custom name for easier organization. • Reset progress anytime Swipe left on a title in the Reader tab to reset your reading progress and start fresh. PDF Library & Reader is designed to be simple, powerful, and private. Whether you’re a student, researcher, or book lover, this app gives you full control over your PDFs. PDF LIBRARY PRO • Unlock unlimited PDF imports and support future features. No ads. No accounts. No internet required.  Just your books.