Auto vote apps here can be found at hive.vote https://www.hive.vote/ but as far as bots, if you're referring to post promotion bots or vote buying that will get you flagged real fast so please don't do that!
If you were just wondering about a way to autovote, then hive.vote is what all of us use, it works exactly the same as the one on Steem except they changed the name. I use it myself!
Yes hive.vote is exactly what we are looking for!
Thanks