Facebook has released its own separate group messaging app for Android and iOS, though initial impressions from early adopters today were overwhelmingly negative. “The Messenger app is an extension of Facebook messages, so all your conversations are in one place, including your texts, chats, emails and messages. Whether you’re on your phone or on the web, you can see the full history of all your messages,” writes Lucy Zhang on the official facebook blog. However, not many users are cool with the new app. “This is useless and stupid,” wrote one frustrated tester. “This isn’t a chat app. It’s a separate Facebook app to let you open your messages /email. You can’t see who is online. I figured FB made this because they realized mobile chat support on their app is horrible. I was wrong. This is the opposite of what you guys needed. 1 star for effort,” he added.Others expressed annoyance that on the Android version of the app, you can’t turn off all alerts permanently, instead having to mute them on an individual basis, or mute all for up to an hour orovernight.