FirstLight
Track morning light. Sleep and wake earlier.
What it does
FirstLight turns your MacBook’s ambient light sensor into a morning light tracker. See live lux and build enough light exposure to help reset your body clock—without extra hardware, guesswork, or manual math. A free, open-source macOS menu bar app.
Track morning bright light from your Mac menu bar to fix your sleep schedule. Android/iOS App coming soon - 1c7/FirstLight
A tiny macOS utility that lives in your menu bar and opens a dedicated dashboard window to track your morning light exposure in real time. It reads your MacBook's built-in light sensor to calculate whether today's light exposure has been strong enough, for long enough, to reset your circadian rhythm — so you don't have to guess or do the math yourself. Requires macOS 13 or later on a Mac with a readable built-in ambient-light sensor. Sensor access relies on the readable but undocumented CurrentLux IOKit property. If you test FirstLight on other Mac models, please feel free to report your results! If the sensor is unavailable on your device, use Debug States → Copy Compatibility Diagnostics…from github.com
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