Just finished my course with Zenyum and the main concern I had has definitely been addressed: a gap between my two front teeth. My teeth were not crooked to begin with, but the gap made me rather self conscious, so I'm really pleased with the results that I've gotten in less than half a year. Overall the experience was smooth and convenient. After a couple of visits to the dentist, I received a full set of aligners, so I just had to switch them weekly at home and upload photos of my progress onto the Zenyum app. Nobody even notices that I have aligners on until I tell them, so it's definitely a preferable option over metal braces, especially for working adults. The app can be buggy at times, but the customer service associate is usually happy to help. Overall I'm happy with the results and I'd definitely recommend Zenyum to anyone looking to straighten their teeth without too much hassle.