Your calm, intelligent co-pilot.
Always watching the road ahead.
Never distracting you from it.
⚡
15-second advance warning
See the new speed limit coming before you reach it
🎙️
Audio-first interface
Eyes on the road. Sentry speaks — you listen
📡
Builds as you drive
Gets smarter and more accurate every trip
🔊
How should Sentry talk to you?
You can always change this later in settings.
✓
Zen — Haptic & Visual only
Silent. Just vibrations and the on-screen animation. Perfect for music lovers.
✓
Subtle — Soft tones
Musical chimes for limit changes. Nothing spoken. Elegant and unobtrusive.
✓
Co-pilot — Spoken word
"Speed limit changing to 45 in 12 seconds." Full verbal awareness.
✓
Silent Navigator — Visual only
No sound, no haptic. Pure visual display. Best with CarPlay or a mounted screen.
🎚️
How much should Sentry say?
More information means more awareness — but also more audio. Your call.
✓
Quiet
Only speaks up for speeding alerts and large speed limit changes (±15mph or more).
✓
Normal — Recommended
All limit changes, 15-second advance warnings, speeding alerts. Balanced.
✓
Full Awareness
All of the above plus school zone alerts, construction zones, and accuracy feedback after each change.
📍
One permission needed
Sentry needs your location to know which roads you're on
and how fast you're going. Your location never leaves your device
except to look up speed limit data.
📍
Location — While Using App
Required for speed limit lookups
REQUIRED
🔔
Notifications
Optional — for background alerts
OPTIONAL
We'll ask for these permissions now. If your browser prompts you, tap Allow.
SENTRY
READY
🔊
⚙️
SPEED LIMIT
—
—
MPH
LIMIT
—
MPH
NEXT CHANGE
—
SEC
CACHED
—
SEGS
Settings
Alert Style
Verbosity
Speeding Alert
Alert when over by
4 MPH
0 mph (exact)15 mph
Advance Warning
Warn this many seconds before
15s
5s30s
Accuracy Feedback
Tell me how I did
After each speed limit change, say if you were early, on time, or late