Self-hosted app crash reporting tools are software that you can install and run on your own server or hosting provider. These tools allow you to collect, store, and process your crash data locally or remotely, often providing features such as logs, stack traces, device information, screenshots, and reports. Examples of self-hosted tools include ACRA, Crashlytics Enterprise, and HockeyApp. The main advantages of using self-hosted tools are that they are cheaper (as you only have to pay for the software license or the hosting service) and independent of the internet connection (as you can access and download your crash data offline or on your own network). Additionally, they are more customizable and controllable (as you can configure and modify them according to your preferences and needs). However, self-hosted tools also have some challenges such as being harder to set up and use (as you need to have technical skills and resources to install and maintain the software and the server), being less scalable and reliable (as they may not be able to handle peak traffic or unexpected errors), and being less compatible and flexible (as they may not support all platforms, languages, frameworks, and integrations).