Day & Night vs MuGen Wallpaper

Day & Night has no write-up on Specifiction yet; its figures are above.

MuGen Wallpaper is a macOS desktop app for dynamic video and programmable web wallpapers. It supports multiple screens, and web wallpapers can receive system utilization and screen-index information. Video speed and volume controls are included in both tiers. Playback can pause when every screen is in fullscreen mode, and the app can launch at startup. The maker says video playback uses Apple Silicon for efficient playback and lower power consumption. The MuGen Wallpaper Community lets users download and share wallpapers, with uploads reviewed before publication. Web wallpapers may opt into weather updates through OpenWeatherMap, using a supplied API key and location access, but they are limited to local resources and cannot call external APIs directly. The free plan costs nothing and allows up to 10 dynamic wallpapers. An unlock is a one-time in-app purchase with no listed price and no wallpaper limit. Community registration collects an iCloud identifier and associated Apple ID email; tokens and the weather key are stored in Keychain.