Math Keyboard vs Cenviro PTW

Struggling to type math symbols on your phone? Math Keyboard is a custom keyboard that lets you input the symbols, Greek letters, superscripts, subscripts, and more commonly used in math and physics — directly from your keyboard. No more searching the web every time just to copy a symbol. From class notes and reports to chats and memos, type math expressions smoothly in any app. 【Key Features】 Superscript / subscript for numbers, letters, and symbols Full Greek alphabet support Rich set of math symbols (basic) Custom keyboard support 【Highlights】 Same look and feel as the standard keyboard Shift key to toggle superscript / subscript (or uppercase / lowercase) Easy tab switching within the keyboard Long-press the Space key to move the cursor Add and reorder categories 【About Pro】 The free version has limited categories. Upgrade to Pro to unlock all categories, including: Standard alphabet Advanced math symbols (calculus) Arrows Logic & sets Custom keyboard You can also switch the alphabet display style between italic and regular. ※ This in-app purchase is a one-time payment. ※ To use this keyboard, you need to add it and enable "Allow Full Access" in the Settings app. (We do not collect any of your input — your privacy is fully protected.)

Cenviro e-PTW is an electronic Permit to Work (PTW) management system designed for field workers, safety officers, and operations teams. Replace paper-based permits with a streamlined digital workflow — from submission to closure. KEY FEATURES: Digital Permit Management Create, submit, and track permits to work from anywhere. Fill out structured forms with work details, risk categories, hazard assessments, and required PPE — all from your mobile device. Multi-Stage Approval Workflow Permits follow a robust approval process involving Sponsors, Area Owners, and Subject Matter Experts (SMEs). Each stage ensures thorough safety review before work begins. Real-Time Notifications Stay informed with instant push notifications for permit approvals, rejections, comments, and status changes. Never miss a critical update. Gas Readings & Monitoring Record and track atmospheric gas readings directly within permits. Ensure safe working conditions with structured gas monitoring workflows. Job Safety Analysis (JSA/JHA) Attach Job Safety Analyses to permits from a shared library, or generate them using AI-assisted hazard assessment tools. Ensure comprehensive risk evaluation for every job. Risk Category Management Configurable risk categories with detailed levels allow your organisation to tailor the system to your specific safety requirements and compliance standards. Verification & Audit Trail Complete audit logging tracks every action taken on a permit. Verification steps ensure accountability at each stage of the process. Mobile-First Design Purpose-built for field use with a clean, intuitive mobile interface. Manage permits, submit verifications, and monitor status — all from your phone. Cenviro e-PTW helps organisations improve safety compliance, reduce paperwork, and accelerate permit approvals across their operations.