There are a couple ways to use Snapseed on a desktop though, with some limitations. Lamentably, there is no desktop version of Snapseed. Non-compatible camera RAW formats can be converted to DNG using the Adobe DNG Converter. I can confirm that it will not open RAW files from the Nikon Z6.
A list of compatible camera RAW formats is available on the Google Snapseed site. I dig deeper into Snapseed in my book The Ultimate Guide to Mobile Photography (it’s a good book, you should buy it ? ).
It’s quite good and has a lot of useful features as well as some of the fun filters and overlays.
Snapseed is a popular photo editing app from Google that’s available for both Apple and Android mobile devices. You can get Snapseed to work on a Windows (and Mac) Desktop.