HomeAppsProductivityGreenheck ToolboxApps like Greenheck Toolbox Here are some great alternatives to Greenheck Toolbox by Greenheck : Physics Toolkit ★4.5 Mechanical Engineering Calc ★5.0 MotorSim 2 ★4.4 RPM Calculator ★4.2 AirMaxx Lite ★3.6 GearBuddy RPM-MPH Calculator ★4.3 Pulley Calculator ★4.3 CookTools ★4.0 RC Tools ★4.0 CNC Machinist Calculator Pro ★4.9 Calculator App - Electronics ★3.7 MOTORUN ENGINE TOOLS - PRO ★3.8 Fluid Mechanics Converter ★5.0 Audio Wizard - Calculators ★4.8 Electrical Motor ★4.5 Psychrometric air - a rhoAir ★4.0