This is a app made by chinese company before few years it was a good app , but now it has become more weirder it displays adds which really makes no sense.
It is in more productivity just because of its high performance download manager which has nice ability to pause tasks and proving a really good download speed .
But I could not understand permissions like reading phone status , managing device accounts , control over screen lock.
So, overall I think we should avoid this app .other than it we can use IDM which also works good.