This is my second smartcube after the GAN i Carry. Out of the box the feel of this cube is significantly better than the i Carry and feels nearly indistinguishable from my RS3 stickerless which has upgraded magnets and lunar lube. From tensions to corner cuts and magnet strength I can't really feel significant a difference between the two cubes.
The app on the other hand is a work in progress. The first pop-up window is entirely in Chinese and I'm not sure what I selected. I just picked the option on the right and it got me to the language selection window. It is still pretty barebones and doesn't do nearly as much as the GAN app to help beginners which to me is the most important feature in a smart cube. This is why I only gave it 4-stars. If the app gets fleshed out a little more and gets some of the bugs under control I will give it the 5-stars this cube deserves. Cubeast support would be the cherry on top to turn this cube into a must-buy.