LightLock

LightLock is a mobile app that helps people improve sleep by controlling the single biggest environmental lever most ignore: evening and morning light exposure. It uses your phone camera (optional) and local sunrise/sunset data to build a simple “light plan” tailored to your schedule: when to dim screens, when to switch to warm lighting, when to get outdoor light, and when to avoid bright indoor light. It also includes a quick nightly checklist (caffeine cutoff, last meal, exercise timing) and a morning “anchor routine” to stabilize circadian rhythm. The app is intentionally not a full sleep tracker—no wearables required—because most users quit complex tracking. You’ll get weekly reports that connect adherence to how you feel (energy, mood, sleepiness) so you can see what actually moves the needle. This is a traditional app with light AI personalization for plan adjustments.