**iOS App import LUT files  - PhotoGoTool**

You can directly transfer png images of LUT to PhotoGoTool.

If you have CUBE or 3DL files of LUT, you need to convert CUBE or 3DL files of LUT to PNG Images(How to convert CUBE or 3DL files of LUT to PNG Images).

Then transfer the png images of LUT to PhotoGoTool, and finally you will find and use they in the custom group of the PhotoGoTool filter library.