SimpleVenti

Professional-grade ventilation calculations and duct sizing made accessible to everyone. From HVAC professionals to DIY enthusiasts, this app simplifies complex engineering calculations.

■ Key Features
• Automatic ventilation requirement calculation
• Optimal duct sizing
• Calculation history management
• Intuitive user interface

■ Supported Calculations
• Ventilation requirements (m³/h)
• Duct cross-sectional area (circular & rectangular)
• Air velocity & pressure loss
• Various ventilation systems

■ Highlights
• No technical knowledge required
• Accurate calculation results
• Offline functionality
• Japanese & English support

Perfect for architectural design, HVAC design, construction management, and more.