Refimages is not only a storefront — it is where the reference you already own becomes something you can work in. Bring a pack you bought on Gumroad, ArtStation, Cubebrush or FlippedNormals into your library and it stops being a zip in a downloads folder.
What you get is the part a download folder cannot give you: full-screen viewing built for drawing from, timed gesture sessions that advance on their own, a canvas to draw on beside the reference, and a collage board for planning a composition from several images at once. Every pack you own sits in the same library, on every device you sign in from.
Most artists end up with reference scattered across four storefronts and as many download folders, which is the real problem here — not storage, but the fact that nothing you bought is anywhere near anything else you bought. One library fixes that, whichever platform the purchase happened on.
Bringing a pack across is free and takes about two minutes. Enter the access code that came with your purchase; if the code is lost, request access with your receipt and it will be verified by hand. You need a free Refimages account for the pack to live in — there is no anonymous redemption.