Autodesk Tinkercad is described as 'Tinkercad is a super easy-to-use, browser based 3D design tool. With Tinkercad you can create 3D printable items: toys to play with, decoration to light up your home or jewelry to express yourself. You dream it, you can make it!' and is a CAD software in the photos & graphics category. There are more than 50 alternatives to Autodesk Tinkercad, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and iPhone apps. The best Autodesk Tinkercad alternative is SketchUp. It's not free, so if you're looking for a free alternative, you could try OpenSCAD or Dune 3D. Other great sites and apps similar to Autodesk Tinkercad are Autodesk AutoCAD, SOLIDWORKS, Autodesk Fusion and Onshape.
The ease of use is similar to Tinkercad. The modality is BREP and sketch/extrude which is different though.