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.