The app itself didn’t have a lot of actions, but there was different behavior for each file compression type, and besides, there were many different things that could go wrong, so I had to do a study on all the various types of files and errors and how to approach them.

I downloaded a few similar apps to get more familiar with this type of service, but most of the information I acquired came from the long conversations I had with one of the developers. This guy helped me understand the various nuances between the file compression types and also listed in detail the different types of errors we could receive. It took me a while to get the idea since it was not a common ground for me.