Circle is a free Android application developed by Ten Eleven that allows you to generate various shapes with ease. The app is categorized under Utilities & Tools and offers a variety of features that make it stand out from other shape-generating apps.

With Circle, you can generate thin/thick circles based on the given radius or circumference. You can also generate ellipses based on the given half-width and height. The app also allows you to generate quarters of circles based on the given radius and spheres (layer by layer) based on the given radius.

In addition to circles, the app also offers the ability to generate quadratic curves based on the given amplitude and width, lines based on the given length and angle, and polygons based on the given length, sides, and angle. The app also does not have any ads, which makes it a great choice for users who are looking for a clean and ad-free experience.

It's worth noting that Circle is not associated with any organization/publisher, and there is no limitation on the parameters such as radius, etc. However, users should use it wisely to avoid app crashes, as parameter values are hardware dependent. Finally, the diameter of generated circles is always odd, and most of the parameters always result in odd numbers.