I did use the app before writing this post. 3.3 Stars is about right. I would like it to be quicker, and more responsive. Even while using the website on my PC, it takes a few seconds for a video to start streaming, and there's no option to set the streaming rate (360p, 480p, 720p, 1080p). That's a bit odd.
The apps usually prod the user to rate the app (out of 5 stars) on the Play Store. It takes only a second to do it. The wisdom of the crowd is more reliable on platforms with network effect like Play Store, App store, Amazon.
On a website/forum like Mouthshut the negativity bias is much more at play - One has to create an account, & search for the appliance/product before writing a review.
The developer of a free app can probably afford to make it incrementally better with time. When a user is expected to pay for the content, & the app is simply a means to deliver the content, the UI & UX has to be reasonably good. Having good content is moot when the UI & UX aren't up to scratch.They will have to get it right sooner rather than later.
Regarding Content, I was pleasantly surprised to see a few K-dramas (Korean) which have somewhat of a cult following among college students (Not sure if that's the case everywhere in India).
Finally, one has to keep in mind the piracy of the app. It's not beyond the pirates to come up with a version of the app with the content already unlocked. (Someone has already requested for an unlocked version of the app on a popular forum which provides pirated versions of paid andriod and iOS apps.)
Disclosure: Not invested.