While iDefrag 2.1.1 offers a free trial version, a valid license key is required to unlock the software's full features and functionality. A license key is a unique code that verifies your purchase and allows you to use the software without limitations. Without a license key, you'll be limited to the trial version's features, which may not be sufficient for your needs.
A: Depending on the license type you purchase, you may be able to use iDefrag 2.1.1 on multiple Macs. Check the software developer's website for details on multi-user licenses. idefrag 2.1.1 license key