it really depends.
If it's different parts of the same system I really don't like if it gets split up to multiple apps. Take steam, there I need two apps, one for the general store and it's functions and one for communicating with my friends. In that case I'd rather would have one app that fits all.
But if I don't need several functions of an app and they are also hurting the experience with it, I'd rather would have the sourced out to other apps.