A passive safety net for everyday drivers. Crossguard quietly watches the road ahead and alerts you before you reach intersections with documented crash history — drawn from nine years of federal records.
Install once, grant permissions once, then forget about it. Crossguard runs in the background and only speaks up when there is something to say.
No "start trip" button. A speed-and-duration check decides when you are actually driving, so the app stays silent while you walk, bike, or ride a train past the same intersections.
While driving, location accuracy steps up and the app continuously compares your trajectory against the local danger map — running on your device, never streamed to a server.
About twenty seconds out from a known danger zone you receive a brief audio cue, a gentle haptic, and a visual marker — calibrated to warn, not startle.
Park the car, walk away, and the app drops back to a low-power passive mode within minutes. Battery cost over a quiet afternoon is under one percent.
Every alert is backed by a specific record. We classify locations using NHTSA's Fatality Analysis Reporting System and matching state DOT incident logs. No black box, no "AI score" — just counts.
| Tier | Criteria | What you see |
|---|---|---|
| High | ≥ 2 fatal collisions in 9 yrs | Audio cue, strong haptic, persistent map marker. |
| Medium | ≥ 1 serious injury, no fatalities | Soft chime, brief haptic, transient map marker. |
| Low | ≥ 3 reported incidents, minor | Visual marker only — no audio, no haptic. |
Crossguard is shipping to iOS and Android in 2026. Drop your email below and we will write you once — when it is on the App Store. That is the only message you will ever get from us.
One email. No spam. Ever.