What's the difference between a Marvel Unlimited free trial and genuinely free Marvel comics?

A Marvel Unlimited free trial grants temporary, full access to a vast library of Marvel comics for a limited period (e.g., 7 days or 30 days). After the trial, it automatically converts to a paid subscription unless cancelled. Genuinely free Marvel comics, on the other hand, are typically individual issues (often #1s, samplers, or promotional content) that you can acquire and keep indefinitely without any cost or subscription requirement. These are less common but are sometimes offered through digital storefronts or Marvel's own website/app during special promotions.