Your co-driver, offline

Every corner,
before you see it.

TrueTrail reads your route aloud as rally pacenotes, finds the twistiest road and times your laps on track. Everything runs on your phone: no account, no tracking, no signal needed.

Pacenotes · lap times · offline maps

The TrueTrail navigation screen during a drive: a sharp left corner just ahead, with the route on the map.

Features

Built like a roadbook

Spoken pacenotes

Grades 1 to 6, "tightens", "at junction", distances to the next corner. Called on time, tuned to your speed and braking distance.

Twistiest route

Choose how much of a detour you accept and TrueTrail finds the road with the most corners. It tells you how many extra minutes it costs.

Circuit mode

Lap times, sectors and live delta, with your phone's GPS or a Bluetooth receiver. 81 circuits in the Benelux, Germany and France are ready to go.

Offline maps

Download your region's map once. After that, routing, pacenotes, search and the map all work without a signal.

Road hazards

Speed bumps, chicanes, narrows, bridges and tunnels from OpenStreetMap, called with the corner they belong to.

Sharing without a cloud

Share a route, a time or a session as a single file. You see exactly what goes in first, and the recipient can drive against it right away.

Screenshots

See it in action

Real screens from the app. Swipe for more.

Privacy

What you drive stays yours.

Your drives, your times and your location stay on your phone. TrueTrail has no server that could receive them.

Read the privacy statement

No account

No email address, no password, no profile on a server. Open it and drive.

No tracking

No ads, no analytics, no crash reports phoning home. This website doesn't track you either.

Everything on the device

The network is only used when you download a map or share something yourself. On the road, the app talks to no one.

Two environments

Rally or circuit, with one switch

Rally

From A to B, corner by corner

  • Create a route, place checkpoints, save it
  • Pacenotes on screen and in your ear
  • Co-driver mode: large notes for the passenger
  • Import your own voice pack

Circuit

Lap after lap, to the tenth

  • Start/finish line and sectors, on the map or by GPS
  • Live delta against your best lap or a shared target
  • Analysis, comparison and export (CSV, GPX, KML, VBO)
  • Also segment, drag (1/8 and 1/4 mile) and 4x4

Closed roads and circuits only

Timing and driving against a time are intended only for circuits, closed grounds and authorised events. On public roads, follow the traffic rules and the laws of the country you are driving in. That is why rally timing is off by default.

FAQ

Frequently asked questions

Do I need internet?

Only to download a map. After that everything works offline: routing, search, pacenotes and the map.

Which maps are available?

All twelve Dutch provinces for now, based on OpenStreetMap. Circuits work abroad without a map. More countries will follow. See all maps.

Which languages?

Dutch, English and French. The app follows your phone's language, or you can choose one yourself. Distances in kilometres or miles.

Which voice calls the notes?

An English and a French co-driver voice are built in. You can also import your own voice pack.

Which phone do I need?

An Android phone with Android 8.0 or newer and GPS. In circuit mode you can connect a Bluetooth GPS receiver for more fixes per second.

When is the app coming?

TrueTrail is in development for Android. iOS will follow later.

Coming soon

Ready for the start?

TrueTrail is coming to Android first.

Android coming soon iOS later