Tempo - Live weather effects on your Mac wallpaper
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Tempo turns your Mac wallpaper into a live weather display. Rain drops, snow flakes, fog, clouds, sun movement, stars — all computed from MET Norway weather data in real-time. Menu bar app, macOS 14+. Free: live weather. Pro ($9.99): simulated weather (Christmas snow, rain anytime), screen saver mode, fine tuning. GPU-accelerated. Apple Silicon native. One-time purchase.

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I built Tempo because I wanted my desktop to feel alive — not just static, but reflecting what's actually happening outside my window. Every weather effect (rain, snow, fog, clouds, sun, stars) is computed in real-time from MET Norway weather data, with zero tracking. The free version gives you live weather. Pro unlocks simulated weather and the screen saver mode. Built entirely as a native macOS app with GPU-accelerated rendering. Installation is one Terminal line or drag-and-drop. Open to feedback on the weather effects — what would you like to see added?