Honestly, first time I really doubt tried to use Partiko, but when I saw many steemians use it (such as 
Partiko is easy to use and don't need big RAM to use on my Android phone.
The developer concerned about the utilities of Partiko for users. This application give new experience to make simple post on steemit.
So I can't say no more about Partiko. I think there is a minor developing is needed such as need to able upload more than one photo using Partiko. Overall this is nice for making quick post