I was debating whether to purchase this app or wallpaper hd and since this app doesnt have a lite version… it was risky as I was already falling in love with the other app… In the end, i finally took the risk and downloaded wallble. While both apps are similar, this one provides preset categories but you can create your own category! click new, type a word like "computers" and it automatically adds your new category and populates it full of images with the word "computers" in the tags. you can also delete the categories you wont use. before this version, the loading time for the photos was kind of slow but now they load almost instantly as you scroll down the page. The only thing I dont like and it is a minor annoyance is downloading images to your mac/desktop etc… as with wallpapers hd, you simply click download.. in this app, you can set as wallpaper or to save to your desktop, you must mouse over the picture, click and drag to your desktop/folder. Then, you must change the name of the file as it is a long messy string of text. also, for it to recognize it is a jpg or png etc…, you put the file extension at the end of the file name. Would be great if they were to include a "download" button or "save" button so you dont have to go through this process. other than this, it is a great app. beautiful pics.