This is a great app, I had the free version for 25 minutes before deciding to buy the full one! There were a couple minor things I wished it had but nothing so important that I would not have purchased it!
I'm so glad I got this.
I can ban, unban, watch chat, watch the console, run console commands, Op players, deop, change whitelist on/off, mob spawning on/off and a lot of other things.
Keeps track of log out times, blocks placed & blocks broken by each player.
Tells you whether or not they are banned, oped.
Kick them ban them with only a push of a button.