Some really smart folks have got me on the Google Apps train this year and it has been a life changing experience. Seriously, I love Dropbox because I've spent so much time there and have everything nicely organised, but Google Drive and Sheets/Document apps make life so much easier when you are out-and-about or sharing documents with other peeps.
I probably download 3-5 new apps every week.
i'd probably cull from my phone at least once a month.
I am constantly looking for apps that add value to my work/life and since I'm already doing it I thought I should start to tell people about the ones I love.