I have my pictures on my computer and I have native applications to edit them. For my needs the free ones (as in beer and as in speech) are good enough. I can Save as... the images I find on the web and edit them too (licenses that allow reuse, Google has a search for them).

So far the only feature that Polarr has and a native application doesn't have is that photo styles from the community thing (not a quote because the spinning pictures are covering the words on my browser most of the time). Unluckily the home page doesn't say much more than that. Can somebody explain it? Thanks.