I like that you can use it to view all your leads in one spot! This makes my job easier when trying find someone who has not been contacted yet by me as well if they are no longer interested we don't have any way know about this other than through our system which could be better!! If there was more options available such us being able create multiple lists so i dont need 2 separate apps just because someones email list changed their contact info etc would make life much simpler.
Also having access online via web browser instead of needing app installed onto phone (which sometimes doesnt work)would also help with ease-of -use.