I see potential here, but it needs a lot of work.
First of all the only manga currently on this application is Bleach and the only chapters available are 1-140.
Secondly, when I first launched the app, I had to press "manga" several times before it give me the list.
Though I do have those two complaints, like I said I can see the potential for this app.
I do have a side question, where are you pull the manga from? Is it your own server or are you pulling from a site like OneManga or 1000 Manga? If you need help obtaining missing Bleach chapters I can get them for you.