This question should be answered before pressing the release button! Everything we get after release is a result of the pre-release planning. That said, what can we consider? - First the performance: Making sure to onboard enough reporting ability to track and fix performance issues efficiently(Firebase is my go-to toolbox for this!) - The engagement: Monitoring user engagement is important and can help understand what they prefer and that way helps make informed decisions to grow - Keep it alive: Let your users know that there are people behind your app. It is important and will help grow a community behind your app, the big win every developer expects!

After launching your mobile app, it’s crucial to keep it engaging and efficient for users. Here’s how: Regularly release updates to fix bugs and introduce new features based on user feedback. Track user engagement to identify how people are interacting with your app and where improvements can be made. Encourage user reviews and ratings to gain insights and improve app visibility.

There are many steps to be considered in this situation. When launching a mobile app, it is absolutely essential to use specialized SDKs such as Firebase or crashlytics to monitor crashes, network latencies, load times. Many IDEs offer app profiling tools that shine a light on the app's RAM, Network and other resource usage which can help target specific code optimizations and the use of better algorithms. It is also essential to conduct regular performance testing on various devices and network conditions to identify and address potential issues. A/B testing can also be used to make data-driven decisions and continuously improve your app. Lastly, Pay attention to user reviews. Negative feedback often highlights performance issues.

The key steps would begin by regularly monitoring app analytics, tracking user behavior, crash reports, and performance metrics. This data will provide ideas for further improvement of the app. Develop such user feedback mechanisms where insights are obtained directly from the users so that their complaints can be instantly addressed. Updates regularly in the form of bugs fixing but also providing features highly required by users. Make the back-end infrastructure of your application as fast and efficient as possible. Use A/B testing for constantly refining the experience for your users. Engaging with your user community through social media and forums can also foster loyalty and give you valuable suggestions about improvements.