If you are starting out with your improvement process we recommend that you start with engaging your already existing users. When your users have been re-engaged with your app you should build a steady on-boarding experience and a pleasant user experience for any new users. When you have a good base in place you can start driving new traffic to your app.
Every app is different and the needs for improvement are different. Whatever you need to do in order to improve your app performance we have the right tool for the job. Have a look through and get inspired!