Snapseed’s primary competition is Adobe and their creative cloud suite of tools, specifically Photoshop and Lightroom. The app is not too well known compared to alternatives, which makes it less likely to be improved on by Google.

Photos cannot be cropped in a 9:16 ratio, and tools for adding filters to images are lacking. Snapseed has several faults that can make it difficult to work with.

Snapseed then allows you to save these files, without affecting the original. RAW editing lets you edit photos directly from their RAW DNG files. These professional tools include image warping through curves, color balancing, and even RAW editing. The app has multiple options that are essential, including brushes, image altering, and other professional tools. greater than 8x10) then I would avoid this workflow altogether, but for small usage, I suspect you would struggle to see the effects unless your JPEG compression was really strong.Snapseed’s primary features involve the editing of photos and image files. In any event, for web display and usage, I'd be surprised if any would really be able to tell. Now PNG isn't inherently lossy, but see point 1 and then your choice of subsequent output formats from Snapseed will matter as, if I recall correctly, it converts to compressed JPG on output. Ideally, to maximize JPG quality, you want to always start from the RAW data. JPG is already a lossy format and subsequent saves result in even more loss from the original compression. This now gives less information for Snapseed to work with and so further edits could result in even less data, especially in the shadows and highlights for subsequent saves.

You've discarded data from RAW to PNG/JPG in the first place. There are a couple of reasons why this will result in reduction of quality: So, the short answer if you're editing and saving from Snapseed is yes.

Snapseed link