If they had launched an app, we would have people here complaining about how no one wants to install an app for a tiny functionality, and then when Google would

If they had launched an app, we would have people here complaining about how no one wants to install an app for a tiny functionality, and then when Google would have inevitably canceled the app in a few years because of lack of installs, we'd have posts complaining about how Google pulls the rug from under its apps. As for those interested in trying it out, the feature is part of Google Assistant.