Partiko is, hands down, my favorite DAPP for commenting and upvoting content on the Steem Blockchain. The App , in my opinion, is the best way to interface with he blockchain. It has a beautiful and streamlined design- and is a very powerful app! You are able to post, comment, upvote, read, share, and more- you will even be rewarded @Partiko points for doing so! Use those points for upvotes or possibly exchange them for SMTs in the future!
I believe @partiko is an essential part of the Steem experience! Sign up here: https://partiko.app/referral/mcoinz79