Yes because there is a too much of traffic we see on a musing and also there are lot of people who are working on musing from last 4-5 months and also they are facing too much problem to write on website instead of writing in cellphone.
There are various option in which I can tell you that application is very important for the newbies who are coming because for them they don't have a laptop so they mostly used mobile phone as a writing purpose and so they want application if they start writing answers on website with the help of cellphone then there is a too much of problem they are facing so I think application should be opened my musing.io.
Musing.io are trying to have a application because they are knewing that they are having a too much newbies in this website and they have problem if they open application then how they use bot that knows everything about where they had copied Grammer mistake and the way they are writing so for great application it takes times to come.