How do I convert a downloaded watchface zip file into an apk file to

How do I convert a downloaded watchface zip file into an apk file to use on my kingwear kw88?

Don’t bother. Use @Eric_Crochemore ​ universal launcher. In the round app section

Please forgive my ignorance, but what do you mean by Universal launcher in the round app section?

Have a look at the round watch app section and find out.

I have founded an apk file downloaded by me and i changed the extension apk. to zip. and then unziped.

@Lucian_Adrian_Enache and how did that work out for you ?

I only saw the png and xml files. Not tested yet.

So - you didn’t use the launcher I recommended from @Eric_Crochemore ?