I like that it is easy to use, has many options for price checking (i do not want to pay too much), can be used in conjunction with other exchanges or wallets, etc.
The fact that it does require more work than some of my other methods. It works well but I have had issues connecting and syncing multiple times so I am always double pulling coins from one wallet when using this app. Also, sometimes you cannot connect at all which makes me very nervous about sending funds because then I would risk losing them forever! This app allows me to keep track of how much money I'm spending per month and helps me budget better.