I really think TopicMojo is on to something. I tried to compare it to AnswerThePublic in my review you can watch here:

https://phillipstemann.com/topicmojo-review-build-website-seo-authority/

I'm really impressed by how many sources TopicMojo pulls data from. You really feel you get a huge dataset to work with. However, it can be overwhelming, so a more focused view with the topics having the highest potential would be really valuable. With that being said, TopicMojo is really an interesting software!