Hi. As you could see on Google Play, there is a lack of 3D modelling apps, so I thought to give Clara.IO a try.
Here it what it works:
You can view the model, pinch to zoom, change material colour, create objects and boolean them, box select.
Opening a drop down menu from top works, but you need to tap and long hold it. Same for sub menus. You short tap only on final item.
Now for what doesn't:
You can't pan or roll the camera. (this seems the biggest issue for usability)
I am running the app on a tablet with a little old GPU, Tegra 3. From time to time, the program freezes. Interestingly, the zooming it seems to perform better than a native app, Autodesk FormIT, so I guess that on more powerful devices there is no lag issue.
Also, you can't scroll the up-down scroll bars in the side boxes, to see more.
I wish Clara.IO would also support touch screen devices. I am looking for a long time for a good app working on my tablet, and Clara.IO has the friendliest interface and is the easiest to use. I like it. If I could fully control the camera, it would be great.
Another thing: in my browser, it says that the connection to this site is insecure and https in the address bar is red with a red lock besides with a cross on it.
I hope that in the future, touch screen support would be added to this app . It would be the best one you could ever run on an Android tablet.