I have been a part of zee paid membership for over a month now and I have seen that the app is extremely slow even to open it takes close to 30 sec for the app to load completely.
Also the videos have a lot of adds in between them which makes the overall experience really bad, Also the videos buffer a lot even when I am connected to wifi which offers a speed of 25mbps videos do buffer in high quality sometimes.
Also most of the movies they have are already available for download on the internet. Also a lot of webseries they show are adult and have content that is mostly 18+ so if by chance your kid opens the app and watches something it will have really a bad impact.
I personally did not like the app as even after paying premium I am shown so many adds and video is buffering even on good internet speed and also the app is not adult content restricted .