The only difference between them is the name and images, otherwise they are exactly the same and will work with any of the mentioned radios.
(In order to allow advertising and sharing of the software on their website/blog/Facebook etc.. Radioddity didn't want references to other brands radios, hence why there are two 'versions'.. and since only then having Radioddity looks like it doesn't work with Kydera/Retevis so both versions are built side-by-side from the same source code with, as mentioned, different images and name

)