Nightshade: DriveDrive NSIt sees your eyes close before you know they did.
Drowsy driving kills. Nightshade watches for the microsleep, and it is loud about it. Rest-break reminders are free forever.
On your Home Screen, look for Drive NS — the full app names didn't fit on the icon grid, so that's the short label this one got.
What it does
Mount calibration
Every threshold is measured against your phone in your mount at your angle — not a lab assumption.
Road-vibration rejection
Chassis motion is subtracted from head motion, so a rough road never reads as a nod.
Break reminders, free forever
Two hours on, fifteen off. Stays free even if you never buy anything.
Warning
Nightshade Drive is an assistance tool, not a safety device. It will not always detect drowsiness. If you feel drowsy, pull over — no app replaces stopping.
Pricing
Thirty days of full detection, free. After that: $3.99 a year or $9.99 once — or keep using it free without detection. You get asked once.