Have completed my Zenyum course, and I’ll say that they work! My teeth are much straighter now and the continuous changing of aligners also did not bother me much on it! I do feel that they are afterall plastic, so do be gentle with them as I got the softer ones cracked probably as I grind my teeth in my sleep! Nobody knew I was on aligners if I did not tell them. Would definitely recommend these on price points and convenience!
But on a side note, the app could be better for more flexibility as I often have to trouble someone to change my dates.