Free Protractor is a user-friendly virtual tool designed for various purposes, whether it's checking homework or tackling DIY projects. With color-coded angles for easy understanding, this app is ideal for students learning how to use a protractor. Simply tap or drag on the screen to manipulate angles effortlessly.

One of its key features is the camera mode, where the protractor overlays on the camera view, perfect for measuring real-world angles. Additionally, the horizontal guide ensures the protractor remains level, while the option to display angle types like acute and obtuse adds versatility. You can also customize the app settings to tailor the features based on your needs.