I don't know if Nicestats apps is safe becareful of using unknown apps make sure they are not asking for your password of your account. . don't give any information about your account but if the apps is just showing to monitor your earnings its fine..
I think you can just directly to nicehash site and login so that you are safe that you are using any apps that asking for password..
I assume that provides at least local info and can possibly give account info from other mining sources. There is awesome miner. It is a pretty deep GUI for almost any mining, but it is pretty hard to set up for some people and requires API access for many things worth seeing.