Backspace is the macOS live wallpaper engine equivalent of Windows Wallpaper Engine built natively in Swift, optimized for performance. ✦ Thousands of live wallpapers: Nature, Space, Anime, Cars & more ✦ Synced Lock Screen + Desktop with seamless transitions ✦ Smart auto-pause in fullscreen (low CPU/RAM) ✦ No subscriptions — $8.99 one-time purchase ✦ 7-day free trial ✦ Requires macOS 14 Sonoma+ No data collection. No recurring fees.