I was initially on the fence about purchasing WriterZen since I had already purchased Textfocus and NeuronWriter and have been using Frase for several years.
After using it for a few days, I've found that WriterZen provides insights into keywords and clustering that you simply can't get with other programs. It also has an academy with articles and videos that you can use to become better at maximizing your use of the program.
WriterZen's Content Creator is OK. Still based on ChatGPT 3.5, but hopefully that will be upgraded in the future. Plagiarism checker is an added bonus that I've not tried yet.
I work in a niche industry and WriterZen has helped me gain insights into search terms and search intent for topics I write about - something I've never been able to find in the past because my niche is so specialized. WriterZen has become a welcome compliment to other programs that help me create good content that ranks well.
Don't let this offer slip by.