PAID not FREE

There is a free version.
The free version migrates:

• the Drupal articles
• the Drupal 6 stories
• the Drupal basic pages
• the Drupal categories
• the Drupal tags
• the Drupal images

If you need more features (custom post types, users, …), you need the Premium version available on https://www.fredericgilles.net/fg-drupal-to-wordpress/