Wallpyria

Wallpyria stretches one photo across every Mac monitor or gives each screen its own wallpaper. If the photo is too narrow, on-device AI paints the missing edges, nothing is uploaded. Plus video wallpapers, dynamic wallpapers from your own photos, per-monitor schedules by time or sun position, and 44 image effects. 14-day free trial, then a one-time purchase. No subscription.