
Spline is praised for its ease of use and intuitive interface, making 3D design accessible to both beginners and experienced designers. Users appreciate its seamless integration of interactive 3D elements, as highlighted by Themefy. The tool's low learning curve is noted by 4rem, while Sound Blocks commends its use of stock assets for quick 3D compositions. However, some users report issues with billing and customer support. Overall, Spline is a powerful tool for creating and publishing 3D content.