I'm going to download an app and then use it to abuse someone that I don't like, isn't that funny?
No, it's not funny. Why would you want to abuse someone using an app?
Because I'm tired of him, and I really hate this games.
Abuse can destroy this person's self-esteem and make them feel terrible, so you absolutely shouldn't do it. If you have a problem with someone, talk to them and find out what you can do to come to a mutual understanding.
But what if I don't want to talk to him?
If you don't want to discuss it with him, then maybe you should just ignore him instead of trying to abuse him. I think it would be better for both of you if you just kept your distance, and tried to forget about your dislike of this person.