What's coming

Position, height, speed, arrival time in local time.

Downloaded before you board.

When the GPS drops out, with how sure it is.

Satellites, signal and what the app is doing.

Mountains, lakes, waterfalls and islands near your route, named as they come up. Offline, built in.

Every flight, with export to a spreadsheet.

The predicted route avoids Russia and other closed areas instead of a straight line.

Tracking starts and stops on its own, helped by cabin pressure on the descent.

Landmarks say whether they're on the left or right, and when you'll pass them.

When the GPS drops out before take-off, the estimate follows your route.

Invite a friend and you both get a free flight. Tell us privately how your flight went and get another.

Whatever testers' flights turn up comes first.

A one-off payment through Google Play: Unlimited £3.99, Pro £7.99 (£4.99 from Unlimited). Testers keep Pro free.

Which features are used and where the app struggles, with a switch to turn it off. Never your position, route or airports.

In testing now. Already has turbulence and arrival weather, landmarks, automatic take-off and landing, the logbook and feedback. Coming next: trips with layovers, the plans, and battery-saving GPS. On iPhone? Join the iPhone test (through TestFlight, Apple's app for trying apps early).

Phone to phone over Bluetooth, in flight mode, on Android and iPhone.

Restarts the GPS sooner when it stalls in the climb or cruise.

Android 8 or later. iPhone follows once its test is done.

Before take-off, fetch the airline's filed route, so the estimate follows the oceanic track instead of a straight line when the GPS drops out.

A small map and arrival time over a film or another app.

With internet before you board: the planes around you, and where your own aircraft is on its way in.

Your routes in Google Earth and mapping apps.

Arrival time and turbulence reports on your wrist. Wear OS first.

Shaded relief, rivers, motorways and city lights at night.

Zone lines, and the local time where you are now.

Watch the route back after you land.

Mark a point and add a note.

Send where you are when the plane has Wi-Fi.

Your recorded route against the aircraft's own broadcast track.

How bumpy your flight was, measured by the phone's motion sensor while it's still: a score after landing, where the bumps were along the route, and records in the logbook.

Only if it measurably improves it; in our tests the route mattered more.