3/5 because after a year and something, part of the tape came off the furniture where I had stuck it. Otherwise, it's very good for its price.

They come off, so a tip before you stick them: put a little silicone every 20 inches to make it work once it dries, instead of the adhesive.

If you put the 2 pieces in a row, the power does not reach, resulting in the brightness decreasing towards the end of the strip.
Unfortunately, the description does not mention specifications (watt/m), so we do not know the consumption. Based on the characteristics, it should be 12 watts/m in white, so 10m would be 120 watts.
For that many watts, I would expect a stronger light.
The mobile application worked easily.