HomeAppsProductivityDuctulator ProApps like Ductulator Pro Here are some great alternatives to Ductulator Pro by welmurr : HVAC Duct Sizer ★5.0 Duct Calc Elite - Ductulator ★3.5 Digiduct ★5.0 Duct Sizer ★3.4 CookTools ★4.0 Simple Offset Pro + ★3.8 Miter Bend Layout ★5.0 Pioneer Official Store ★4.8 HVAC Sheet Metal Pro Calc ★5.0 Pipe Diameter Calculator ★4.0 Hydraulic System Calculator ★4.8 Concrete Calculator ★4.3 Inspection HVAC Calculator ★4.6 Civil Site Engineer App ★4.4 HVAC Calculator Lite ★3.4 Material weight calculator ★3.8