Capture thoughts and notes without distractions or ads. Encrypt and store notes locally with end-to-end encryption. Add text, audio, images, PDFs, and math expressions. Organize notes into folders and attach documents.
Create pool and billiards diagrams by drawing lines and simulating ball movement. Choose from multiple rack types. Save diagrams to camera roll or files. Share via messaging apps. Use intuitive gestures for precise drawing.
Access product specifications for air conditioning and refrigeration equipment. Search by model number, view detailed technical data, and download documentation. Login with existing OPI credentials or create a new account.
Check warranty details, inventory availability, order status, and technical manuals for products. Access tech specifications and order history. Receive support and track business growth tools.
Create and organize digital for brainstorming, planning, and note-taking. Arrange on a virtual board to visualize ideas or workflows. Add text, sketches, or notes to individual . Sync across devices and export content as needed.
Create flowcharts, mind maps, and organization charts with customizable styles. Copy diagrams as images, export or print with one click. Adjust element styles and layouts for professional results.
Create and organize boards for teamwork. Add sticky notes, drawings, and images. Collaborate in real time with team members. Drag and drop elements to rearrange. Comment on notes and track changes. Export boards as images or PDFs.
Organize and review with customizable sets and spaced repetition. Add notes, diagrams, and equations. Export cards for offline . Track progress and set goals. Sync across devices.
A editor that supports plain text, , and Textbundle. Renders documents fully without modifications. Displays images directly in the editor. Supports math formulas, mermaid, and Echarts.
Create handwritten with customizable pens and highlighters. Annotate and markup PDFs. Record audio . Use AI to enhance note-taking. Organize with folders and tags. Sync across devices. Export in multiple formats.
Record EMF levels using device sensors. Analyze data with interactive charts. View real-time measurements via gauge and diagram. Automate long-term recordings. Export and share results. Track EMF patterns for research.
Access electrical codes and standards for residential, commercial, and industrial applications. Search for wiring diagrams, safety protocols, and equipment specifications. View detailed explanations of electrical systems and components.