Ductulator Pro by welmurr is a full version, easy-to-use duct sizing calculator available for Android 9.0 and above. This app allows users to calculate the duct size for their HVAC system based on either maximum friction or velocity. Users can also switch between units (I-P or S-I) with a simple tap.

The app is designed with a clean and intuitive interface, making it accessible to both professionals and DIY enthusiasts. Ductulator Pro is based on standard airlb/ft3 (1.2 kg/m3) in clean galvanized steel duct, ensuring accurate and reliable calculations.

Overall, Ductulator Pro is a comprehensive and reliable tool for anyone involved in HVAC system design and installation. Its simple interface and accurate calculations make it an ideal choice for professionals and DIY enthusiasts alike.