Jenkins is an open source, cross-platform automation server for software development, testing and deployment. It is written in Java, and it provides a web-based GUI for users to monitor and control their software development processes. It automates the steps required to build, test, and deploy software applications, making it easier to manage and speed up the development process. It is highly configurable and can be used to build projects in multiple languages, including Java, Ruby, Python, Groovy, and more. It is also capable of integrating with other software development tools such as GitHub, Maven, and other continuous integration servers. Jenkins is easy to use and can be quickly set up to run automated tasks and build jobs.
Regarding mobile applications it is definitely easier to use. You can start building right away without spending hours on configuration and maintenance as in the case of Jenkins.
Discontinued Hudson is now Jenkins
The main feature is the Value Stream Map, which allows easy visualization of the progress of follow-up versions in the pipeline.