The absolute worst. Period.

Where to begin? I had hangouts and then it told me to upgrade to Google Voice because initiating a text using my google voice number on hangouts was near impossible. Then after switching to the Google Voice App it doesnt transfer my old Hangouts chats (really, how hard could it be?). Then theres a bug where you get an icon badge enumerating unread messages, you open the app, tap on the conversation, exit the app only to find the badge still displaying, then you have to repeat the process so the badge disappears. And now I cant swap over to Hangouts because...? Who knows! Fail fail fail. Hate this app.

Killing for love about Google Voice, v2.5