IObit Driver Booster Pro offers both a free and a paid version. The free version allows basic driver updates but lacks some advanced features available in the Pro version, such as automatic updates, priority support, and a larger database of drivers. If you want to unlock all features and enjoy a smoother experience, purchasing a license key for the Pro version is recommended. However, some users seek cracked versions to access these features without payment, though this is not advisable due to the associated risks.