If you want to monitor keywords on Twitter and not just in your timeline, you might be interested to check the iOS app Clatters : https://apps.apple.com/us/app/clatters/id1480930237
Full disclosure : I'm the developer
That being said, I am really impressed by this new service. Creating such a solution in just a couple of hours/days is astonishing.
That being said, I am really impressed by this new service. Creating such a solution in just a couple of hours/days is astonishing.