Malwarebytes is a complete security package now and is available in premium and free versions. When you install Malwarebytes for the first time, trial version of Malwarebytes Premium will be installed, which will expire after 30 days and you will be nagged at the end to upgrade.
Learn how to deactivate Malwarebytes Premium trial, which reverts Malwarebytes to free version, here is how you can do that.
Downgrading or reverting to Malwarebytes Free from Premium Trial
1. Open Malwarebytes interface
2. Click on Settings, and click on ‘My Account’ tab and click ‘Deactivate Premium Trial’
3. When you click ‘Yes,’ Premium trial will be converted to free version, information displayed by My Account tab confirms that
Edition: Malwarebytes Free
Status: Always free
Expiration date: Never expires.