Both keyword research tools are amazing in their light. They both have a reputation for efficient keyword delivery, but they operate differently:
Long tail Pro is used extensively for conducting target keyword research. It can help you analyze and monitor your chances of success. SEMrush goes a bit further to help you conduct site auditing, analyze the backlinks of your competitors and monitor their traffic.
SEMrush provides a free 14 days trial, but Long tail Pro doesn't only give 7 days’ trial, it also gives you a 10 day money back guarantee period.
Retrieving long tail keywords is easier with Long tail Pro than with SEMrush.
While SEMrush employs clickstream data, Long tail Pro doesn't.
SEMrush employs more technical criteria for scoring keyword difficulty. Longtail Pro is engineered for long tail keyword search. Long tail keywords will rank your content better on search engines.