Things is a Mac tool for storing details about your daily assignments. This type of programs comes in handy if you're the kind of person who is dealing with multiple tasks on a daily basis. With its help, you can easily remember which to-dos need to be completed before reaching their deadlines.
The utility features a user-friendly interface, communicates well with Mac's Reminders and Calendar tools, and can automatically back up the stored data to a Things Cloud account. What's more, it's packed with a powerful search tool to help you immediately locate the to-do entry you need.
Another thing I like about this program is that it provides you with a simple way to organize the stored content. To be more exact, you can sort your to-dos into separate groups if needed, create new task categories, attach tags to your entries, etc.
The only aspect that bothers me is its price. You can find cheaper solutions for keeping track of your daily assignments, but not all of them are as feature-rich and user-friendly as this utility.
Hence, it's up to you to decide, based on your requirements, if Things is the right program for you.