Absolutely love the app. If it set the most recent pic as your wallpaper automatically each day, I would have voted 5 stars!

Couldn’t be easier to use, just click the image you want as the background. Thats it! For multiple monitors simply make sure the monitor/desktop you want is active and then click an image. It will only set the background for the monitor you currently have active (with the menu bar at the top not faded out).

The app is simple enough to use. Click on a picture and it's downloaded immediately and put on the desktop. However, there is no way to select multiple files for download. This is only an issue when you first use the app, and even then it doesn't matter if you only want the new images. Still, it would be nice to have an easier way to dowload multiple images. Also, I can't understand why the app is unresponsive to the arrow keys. The only way to look through the images is with the mouse/trackpad, which is kind of annoying.It works fine; just needs a bit of polish.

All of the images are of too poor quality to be used as desktop. Many of the images are not even from NASA. And some are pirated images form internet sites including watermarks of the original photographer.