Material Icon Maker Pro Key is a license key that unlocks all the features of the Material Icon Maker app. This personalization app lets you create custom icons for your Android device. The Pro Key unlocks all shapes including Squircle, Pentagon, Hexagon, Octagon, and Decagon. You can also customize the round radius and export icons in high resolution up to 512 x 512. Additionally, the Pro Key allows you to export icons to all resolutions automatically for Android launcher icons. You can also export adaptive icons for Android apps and use more cool fonts. If you choose to buy the Pro Key, it helps the developer continue development. However, the app does not provide any personal or contact information for the developer.