John’s Background Switcher vs Vivid Walls

John’s Background Switcher changes a Windows or Mac desktop background on a schedule, using individual photos or assembled montages and collages. Its image sources include local photos and services such as Flickr, SmugMug, Unsplash, Pixabay, Dropbox, OneDrive, Vladstudio, Immich, and Media RSS feeds, though availability varies by platform. Windows also lists Pexels, Last.fm, and Wallhaven. On Mac, it can manage multiple monitors, showing the same or different images on each, or using a single monitor. Mac switching intervals range from every 10 seconds to 7 days, with grayscale, sepia, and desaturation effects. Windows support starts at Windows 10 and requires Microsoft.NET 4.8; the setup wizard can install that dependency. The maker says settings and authentication tokens are stored locally, photo services are contacted directly, and cached photo results are kept for no more than two days. Windows is free at free. Mac direct costs 7.99 USD once, and Mac App Store costs 8.99 USD once.

Vivid Walls is a native macOS app for Wallpaper Engine scene files and video, web, GIF, and image wallpapers. It renders scenes on Apple Silicon with a Metal scene engine. Wallpapers can react to cursor movement, clicks, system audio, or focus modes. Users can span a scene across displays or set independent scenes, then schedule them by time of day or focus mode. The app pauses when the desktop is fully covered or another app is fullscreen, reduces its frame rate on battery, and respects Low Power Mode. Eight animated 1080p wallpapers are loaded into the library at first launch. A free Windows Companion transfers a Wallpaper Engine library to the Mac over local Wi-Fi using a four-character code. The free plan keeps the bundled wallpapers; the Full Library costs $9.99, paid once. The app requires macOS 14.0 or later and Apple Silicon M1 or later, and does not support Intel Macs. The maker says some scenes may render incorrectly because of their varied effects and content.