I wouldn't know about any apps like that, but it would seem reasonable to be able to mute key words even if they are not hash tagged.
@reallyedbrown Ah, sorry. I'm quite new here and I wouldn't know other than to mute the person. But if multiple people are sharing the same photo, that could be tricky. :(
@Romaq it's a photo, not a word though. Hence why I want to mute or hide just that one toot.