For iPhone and iPad

The flight computer that works when you have no signal.

SkyRule brings together flight calculations, quick references and timers for pilots in the UK and Europe. Everything runs offline, on your device.

Try the web demo Coming soon to the App Store

SkyRule Crosswind screen showing a runway, the wind and its components

Tools you can check at a glance

Diagrams build as you type, and the answers stay on screen while you enter values.

Wind

Heading and groundspeed, finding the wind from your track and heading, and runway crosswind with gusts.

Altitude and speed

True airspeed, density and pressure altitude, cloud base, ICAO cold temperature correction, and Mach with SAT and TAT.

Planning

Time, speed and distance, fuel, climb and descent, glidepath, and sunrise, sunset and night times.

Holding

Direct, teardrop or parallel entry with the steps to fly, a north-up diagram, and optional wind correction.

Timers

Fuel tank switching, hold legs and flight time, with iOS notifications even when your screen is locked.

Reference

METAR and TAF decoding checked against your minima, searchable UK and European VOLMET, runway condition codes, wake turbulence, squawks and comms failure.

See it working

A red Night mode protects your night vision, and each reference page shows its source.

Holding screen showing a teardrop entry on a north-up diagram — Holding entry, drawn north-up

VOLMET search showing the broadcasts that include Frankfurt — Find the VOLMET for your destination

Timers screen in red Night mode with a tank switch countdown — Tank timers, in Night mode

One price, no subscription

Try every tool free for 30 days, then keep them with a one-time purchase. There is no automatic charge.

£7.99

UK launch price. Prices in other countries are shown on the App Store.

Always free

Squawk codes, comms failure procedures, light signals and interception stay free, with or without the unlock.

Private by design

No account, no analytics and no tracking. Read the privacy policy.

A supplementary aid. SkyRule is not an approved EFB or an official source of briefing or performance data. Always use your approved documents and verify results. See the terms of use.