Stack multiple timers anywhere on your Mac
Glasstimer gives you beautiful countdown windows for shipping sprints, studio sessions, cooking, or anything else that needs a gentle alert.
Jan 23, 2026 • Jake @ CaLab
Glasstimer is the catch-all countdown app in the Calcium Lab lineup. Launch it next to Glasswatch, duplicate as many windows as you need, then set custom alerts with a couple of keystrokes.
It’s perfect for live streaming, cooking, mixing audio, or timing product work without juggling multiple apps.
Highlights
- Unlimited timers Keep three, five, or ten countdowns active at once.
- Preset library Save frequent durations (10m tea, 25m sprint, 90s stretch) and recall them with one click.
- Quiet or loud alerts Choose gentle taps, immersive chimes, or silent visual cues.
- Pin to top Timers float over creative tools without trapping the mouse.
Designed for multitaskers
If you’ve tried to use the Clock app for multiple timers you know the pain - no floating windows, no easy way to place timers on a second display, and no quick presets.
Glasstimer stays glassy but readable, so you can tuck timers along the edge of your monitor and still see your wallpaper or Final Cut timeline underneath.
Glasstimer vs. the default Clock app
| Feature | Glasstimer | Clock app |
|---|---|---|
| Multiple floating windows | ✅ | ❌ |
| Custom alert styles | ✅ | ⚠️ Limited |
| Keyboard shortcuts | ✅ | ⚠️ None |
| Preset durations | ✅ | ⚠️ Manual entry |
| Glassy design | ✅ | ❌ |
FAQ
Can I duplicate timers?
Yes, use ⌘N to spawn another window, then set a different
preset.
Does it run on Apple Silicon?
Yep - optimized for modern Macs and macOS 13+.
Try it alongside the other glassy tools
Pair it with Glasspomodoro for focused work sprints.