Musically is one of the most trending apps in the Google Play Store from the last few years. It has got more than 20 million installs in this interval of time. That tells the interest this app has from the young generation users. Those users are the backbone of such entertaining apps. You cannot develop such apps for old aged people because they won't be interested in using such apps. Musically targeted the children mainly and it was a success for that reason.
According to a survey done by researchers, Musically is used mostly by children that are going to schools and colleges. They use Musically in their free times and also whenever they get time. Therefore the user engagement is higher for Musically, and that's important for any app to grow. This implies that Musically has a great team behind to make it the big thing. They're almost there to hit their goal, and I think they will achieve it in the next few years.
What makes Musically the most favorite app for kids is that this app has some popular features like Musically followers, likes and a 'Crown' label. Users want to increase their number of followers and likes to attract other users. Not only for attraction but also to show off. Users with a higher amount of followers are considered to be the kings of Musically, and they usually have a 'Crown' which is a feature of respect. Whoever has a crown, that gets respect and popularity from other members. Their videos are featured on various places of Musically, and therefore the reach they're enjoying is very higher.
Similarly, Musically can make a user famous when they get featured. Those users can have a higher number of likes on their videos. Some members get more than fifty thousands of likes for their posts as they have a huge number of followers. This is the reason why people are behind followers and likes. They need it badly somehow to be the rulers on Musically. Therefore there are many hacks developed by great coders just for such enthusiastic users of Musically. Anyone can use such methods for improving their page, but it's not the right way. Most of the featured users got this level of fame by giving their best effort and not through these shortcuts.
Still, it's a great bet to use the hacks, but I will never recommend it personally at all. I have a page of one million fans, and I made it within one year of hard work. You can also do it. All the best buddy.