crash reporting
A service that collects app crashes and error details so you can see what broke and fix it.
Like a plane’s black box that records what happened when things went wrong. Crash reporting captures when the app stops unexpectedly and sends details such as the device, screen, and error message to a dashboard, which is a web page with lists you can sort and search.
It matters because most users will not tell you more than “it crashed.” Reports show patterns, affected versions, and the lines that failed, so you can fix urgent issues first.
In practice you add a small library, which is a helper package, set a project key, which is a code that identifies your app in the service, and test by forcing a crash in a safe screen. Before launch, make sure crashes show up and include enough detail to act on.