Coast: Smooth Ride Coach

Coast is a riding coach for scooters and cars, and now a navigator. It records your ride, scores how smoothly you rode out of 100, shows you on a map where the rough moments happened, and gives turn-by-turn directions while it keeps scoring.

Every hard brake throws away speed you already paid for, in charge or in fuel.

How it works

1. Tap Start Ride and pick what you are riding. A scooter and a car brake very differently, so Coast judges each against its own thresholds.
2. Ride. Coast records with GPS and the phone's motion sensors.
3. Tap Stop Ride. Coast scores and maps the ride on your phone.

Navigate while Coast coaches

Search for a place, or tap one on the Google map, and Coast Pro gives turn-by-turn directions: the next turn with its arrow, the one after it, a live ETA and the distance left, with the next instruction on your lock screen. Start directions and Coast offers to record the ride too, so the same trip gets guided and scored at once. No other navigation app coaches you while it routes you. Rides remember where they went: the destination shows in History and is pinned on the ride's map.

Lock your phone and keep riding

A ride you start keeps recording with the screen off, or while you use another app, until you tap Stop Ride. Android shows a notification while a ride records. Coast does not end a ride by itself, and a ride is saved when you stop it. When no ride is running, nothing is recorded.

While you ride

Speed, distance and a live count of the rough moments so far, or, while navigating, the next turn and your speed, on a Google map that follows you.

Your score

One number out of 100, worked out from your hard brakes and hard launches, how far you rode, and how firmly you rode the rest of the time. If a ride was too short to judge, or the tracking too patchy to trust, Coast says so instead of showing a number.

What is free

For every ride Coast can measure: the score, your route with each hard brake and hard launch pinned where it happened, how many rough moments there were, and roughly how much range they cost you. Your three newest rides stay in History. Older rides are kept on your phone, not deleted.

Coast Pro

Directions: search, turn-by-turn guidance and a live ETA while Coast keeps scoring.

Coaching after every ride and across rides: which habit cost you points, your toughest ride, and how steady you are, with a breakdown and speed graph.

Trends: whether your riding is improving once you have five scored rides.

Full history and ride replay: every ride, not just the newest three.

The Pro map: tilt, satellite view and live traffic.

Coast Pro is a yearly subscription or a one-time lifetime purchase, with prices shown in the app before you buy.

Privacy

Your rides, scores and sensor data stay on your phone. Searching a place or asking for directions sends those coordinates to Google to answer that request, and nothing else leaves the device. Details: the privacy policy linked in this listing.