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Pros
Pro Fast performance loading photos
QuickPic displays photos ultra fast and performs better than most stock gallery apps. Developed with speed in mind, QuickPic will make working with any library of photos lightning quick.
Pro Supports multiple online photo album services
QuickPic integrates with: Flickr, Picasa, 500px, and many more.
Pro Supports hidden images
In order to hide an image, start the title with a period. This can be great for privacy purposes.
Pro Excellent file management tools
QuickPic offers excellent file management tools, with the ability to move and rename photos, users are in total control over the photo library. Easily find new photos by date or location with the grouping tool.
Pro Impressive video-player
Allows to lock a video in landscape mode and intuitive controls via swipe gestures.
Cons
Con Buggy and unstable since acquisition by Cheetah Mobile
v5.0.0, after acquisition by Cheetah Mobile, has countless bugs and basically nonoperational. This, probably, clone of original app, assembled from alternative, home-made and very low quality source code.
Con Untrustworthy
It's owned by Cheetah Mobile. That says it all.