HomeAppsProductivityAir VentApps like Air Vent Here are some great alternatives to Air Vent by Air Vent, Inc. : Simple roofing calculator ★4.1 Roofing Calculator ★3.8 RoofSnap ★3.7 Rafter estimator for roofing ★4.3 RedX Roof Builder - 3D Design ★3.2 Bubble level ★4.4 Cool Bubble Level (Clinometer) ★4.5 Bubble Level Pro ★4.8 Ventilator ★4.0 Air Quality Monitor & Weather. ★3.7 AirLab: Air Density & Density ★4.6 Room Temperature Thermometer ★3.6 Air Meter: Air Quality & UV ★4.2 Duct Calc Elite - Ductulator ★4.3 Clinometer + bubble level ★4.6 Barometer ★3.7