SmugFolio for SmugMug HD (Android) app for $0.99

SmugFolio brings a fast, full-featured photo viewer to anyone who uses a SmugMug account for online photo management. SmugFolio loads photos from the SmugMug website while your phone charges so you can take your photos with you wherever you go. SmugFolio automatically resizes your photos to maximize your phone's storage. You can store roughly 1,000 photos on only 100 MB of space.++