This app is intended for Ruby software developers over the world. It is helpful not only for job interview situations, but also for refreshing many aspects of Ruby programming language during normal working schedule.
It provides 220+ Ruby questions with answers and code examples.
The knowledge is divided by 13 categories, including Data types, Classes, Inheritance, Operators, Procs and lambdas, and many more.
You can add interesting questions to bookmarks to check them anytime later.
There is also a "Random questions" game - try it to test your knowledge!
And the user interface contains three different color themes as well as a dark theme.
Please enjoy and feel free to share feedback!