Clara.io is a free, easy-to-use cloud-based 3D modeling, rendering, and animation application. It allows users to create, edit, and render 3D scenes, as well as animate and simulate physics in real-time. Clara.io is geared towards beginners, as it features an intuitive user interface and a library of ready-made objects and textures that can be used to quickly create 3D scenes. The app also includes advanced 3D modeling tools for experienced users, such as NURBS curves and surfaces, polygonal modeling, and subdivision surfaces. Additionally, Clara.io supports a wide range of file formats, allowing users to import, export, and share their 3D models with clients or across other 3D applications.
Discontinued Has not been updated for iPad in a long time and does not work on iOS 11.
Discontinued According to the official website k-3d.org: The latest version of the "source code" is from November 2015. And the latest binary executable version is even older. According to its Sourceforge page (https://sourceforge.net/projects/k3d/files/K-3D Win32 Binaries /), the latest version is from June 2010.