The concept is interesting, and I don't know how many other extensions are out there like this one (probably a lot though), however, it annoyed me from the start. You need to login or get a 7 day free trial. I did the login and didn't get a quick email, so I had to use the 7 day free trial. It acts as a data scraper, which I could use, however it doesn't seem to update well. You can likely find better. It has inspired me to look for better.
The plugin can be categorized under 'Productivity' with subcategories including 'Writing Tools', 'Vocabulary Support', 'Spelling Assistance', 'Content Summarization', and 'Web Page Extraction'
The plugin facilitates the creation and use of word banks for writing, vocabulary, spelling, comprehension, and recall
It also provides the ability to summarize and extract important information from web pages, making it a valuable tool for enhancing productivity in various language-related tasks