So you've built the core of your app. Now how do you know what your users are up to? How can you re-engage them? And how can you keep crashes and jank out of your app, so they don't run away? In this video, Jen Person addresses these questions. Check out the ‘All Sessions’ playlist for the rest of the talks that were given at GDD Europe ’17: https://goo.gl/6BFfHv Subscribe to the Google Developers channel: http://goo.gl/mQyv5L