S3 Frontier showing low on memory warning

This happened not long ago to me when I had lots of free watch faces (not facer) downloaded and realised they were obviously storing directly on watch rather than phone…i deleted everything other than the pre loaded watch faces and have only been using facer since then, have purchased a couple of bundles, and downloaded some nice free faces as well. Checking available memory shows 3.9GB of 4GB used…

I suppose my question is, is there a setting im missing, i assumed all watch faces were stored online linked to account and used data to sync to watch? or actually saved on phone and used data to sync to watch? If i cant figure out Im just going to have to try deleting all freebies and see if that frees up memory

Thanks in advance