Firebase Crashlytics

If your application is in the initial stage it's very important to use Firebase Crashlytics to get the issues of real devices. Because at the time of development we can test on some devices only so it's very important to watch the behavior of other devices for the app and we can achieve it by Firebase Crashlytics.

Firebase Crashlytics helps us in tracking our app's performance and crash-points. This helps us improve the app performance and provide a better user experience. Also, we get to know what are the areas that user liked the most from the screen time that user spent while using the app. Sometimes when we want to set up Crashlytics to test small features, it becomes complex to set it up with separate screens.

Crashlytics is the go-to mobile crash/analytics tool for the entire industry. Now that it is 100% free across all usage levels, even with enterprise feature usage, there is honestly no reason to go with any competitors. Crashlytics had the first mover advantage and has continued to stay ahead of the competition, even after its 2 acquisitions (first by Twitter, then by Google). The only realistic competitor to Crashlytics is Instabug, but as soon as you go beyond their most basic features you are looking at a $124 to $499 per month bill. For all of the apps I have worked on, that has never been worthwhile.

Crashlytics is well suited within any native application in order to understand where and why crashes may be happening, and how many sessions and users are affected by crashes. It is also a great tool to establish a crash free baseline that needs to be kept by the development team. I don't believe it is well suited for tracking the bigger picture around your users' in-app behavior.

I can't imagine a scenario where Crashlytics would not be well-suited for use in tracking native mobile app crashes, but maybe it's not as useful for things like Xamarin or React Native (if they even support those).

General mobile app development. How can you live without it?

Crashlytics is almost a defacto standard in the Android world for tracking crashes in the field. I've used it on the last 4 Android projects I've been on.
It's not as helpful on iOS' stacktraces but I'm not sure if anything would be better because iOS stack traces are from ObjC code which is not as useful as Java stacktraces.