HomeAppsToolsDuct SizerApps like Duct Sizer Here are some great alternatives to Duct Sizer by Energy4You : DUCT Ductulator ★4.7 HVAC Duct Sizer ★4.5 Ductulator Pro ★4.0 Ductulator ★5.0 Duct Calc Elite - Ductulator ★3.6 CookTools ★4.0 Simple Offset Pro + ★3.6 Miter Bend Layout ★5.0 TEC Gauge ★4.5 Pioneer Official Store ★4.8 Greenheck Toolbox ★4.0 HVAC Sheet Metal Pro Calc ★5.0 Square Meter Calculator ★4.8 AQL Calculator ★4.3 Simple Calculator ★4.2 Unit Converter ★4.7