: Uses HALD patterns to capture color, contrast, and brightness adjustments pixel-by-pixel.

I notice you're asking about a feature for something called "Iwltbap Lut Generator V1.6" with a "Free Download" tag.

Yes. The developer released V1.6 as freeware while newer versions are paid. You do not need a crack or serial key.

Once you have completed your "Iwltbap Lut Generator V1.6 free download," follow this tutorial to create your first custom LUT.