On the basis of taking the screenshot displayed on App Store as the first step of marketing, scrnshts, exclusively lists the most remarkable examples of those on its site. You can view the images of the App Store screenshots from each category such as shopping, finance and music once you log in the site, and review the featured images of each category when you click on the category section present on the site's left-hand side. It's worth noting that you most likely will come across some apps you haven't heard of before.
Suggesting you should be attracting users to use your application within 7 seconds through your app icon and the screenshots, scrnshts makes it easy for you by providing inspiration with the best examples of those. Highlighting the importance of the first 3 screenshots you'd be using, scrnshts recommends that you choose images that best reflect your brand and your application. Detailed information, from the color formats to dimensions and even on how many screenshots to add is provided on the site.
We'd also like to note that you can be notified on new images by leaving your e-mail address to scrnshts. It's also possible to search with a few keywords if you find it exhausting to search through each category. The Mobbin-like site created by Thomas Vimare focuses exclusively on screenshots instead of design. It's possible to make contributions to the site. You can submit any App Store screenshot that you like through the form available on the site.