The term "freemium code" is used as bait to make users believe they can bypass the payment wall for free. In reality:
They may ask you to install "configuration profiles." Installing unsigned or untrusted profiles can expose your device to malware and data theft. zjailbreak pro freemium code link
The version of Cydia it installs is typically a "web-clip"—essentially a glorified bookmark pinned to your home screen—rather than a functional system-level package manager. The term "freemium code" is used as bait
Unlike real jailbreaks, these "virtual" tools do not grant true root access to your device, meaning you cannot run genuine system tweaks. Why You Should Avoid "Freemium Code" Links Unlike real jailbreaks, these "virtual" tools do not
A tweak manager that uses exploits like "MacDirtyCow" to allow customization without a full jailbreak. Summary of Risks What is Jailbreaking & Is it safe? - Kaspersky