Catch facilitates tracking and downloading your favorite shows. It is mainly intended to work with showRSS, a service that sends you notifications when a new episode becomes available as a torrent download. This requires creating an account, selecting your favorite shows and generating a feed link.
The tool is very light, which is good as it needs to run continuously from the Menu Bar. It is also very simple to use. You are required to provide the intended feed link, and, fortunately, the latest version supports using any torrent feed and not only showRSS. It is also good that it supports both magnet links and HTTPS. Regrettably, it is not allowed to track various feed links.
Luckily, the application can be set to check feeds at given hours so that it does not interfere with your work or affect your connection speed. Likewise, it is excellent that it integrates with your favorite BitTorrent client and starts downloading the new contents and even organizes them in folders according to the show name.
All in all, Catch saves you the effort and the time needed to manually track your favorite shows. It is very simple to use and accommodates to different uses. The product is open-source and it will not cost you a dime. However, you should be aware that some torrent clients support subscriptions, which makes this tool unnecessary.