An excellent wallpaper changer with a huge collection of 4K and full HD wallpapers.
Pros & Cons:
4K Wallpapers by HD Pro Walls is an auto wallpaper changer complete with a huge collection of 4k and full high definition wallpapers.
The wallpapers are classified into several categories and made easy for you to choose. They include editor's choice, bird’s eye view, live wallpapers, abstract, animals, architecture, avenue, bokeh, lights, 4k amoled wallpapers, flowers, nature, women, love, silhouette, minimalist, etc.
To set wallpapers with this app, run 4K Wallpapers, then set wallpaper as Home Screen, or Home Screen and Lock Screen. Afterwards, tap any wallpapers from the categories to download to a default folder (~/Pictures/UHD Wallpapers) on your device. You may choose a custom folder but it is restricted to a paid-for Pro version of the app.
Download two or more wallpapers into the folder for the wallpaper changer to take action. When enabled, you can double-tap the homescreen to change the wallpaper, set the frequency of changes in minutes, hours, days or weeks, and have a choice of randomizing wallpapers to display rather than rotation.
Best of all, this app allows you to adjust the levels of blur intensity and darkening wallpaper for better contrast with the icons on the homescreen.
This app is supported by ads, which appear during setting up wallpapers with the app. No ads appear when the wallpaper changer is in action.
4K Wallpapers was reviewed by Gizmos Freeware on