Topicmojo is a great tool for everyone that's interested in SEO. The amount of data they provide is very helpful in identifying the keywords for content. What I like about topicmojo is that they provide data from many diverse sources, which helps to get a good overview when learning more about a specific topic.

Topicmojo has given me with relevant data for me, from Sweden. It's effective even for those who don't live in the United States (or any other English-speaking nation).

A very active founder that has already released two additional significant upgrades since I began utilizing Topicmojo!

Even though I use Semrush (among many other SEO tools), I bought the SEO add-on. It's pretty convinient to get some data immediately. It's not a must, but it's a nice little extra feature. :-)