Vario One

VARIO One – Your smart variometer for iPhone and Apple Watch.

Precise as a professional vario. Simple as an app. No extra hardware needed.

VARIO One combines barometric pressure sensor, accelerometer and GPS into a full-featured variometer — right on your iPhone and Apple Watch. Both apps work independently and signal lift with acoustic beeps. Optionally connect an external Bluetooth vario for even greater precision.

Try all features free for 14 days.

AIRSPACE MAPS & WARNINGS

Download airspace maps country by country — always up to date, straight from OpenAIP. Or import your own OpenAir files (classic and Naviter 1.0/2.0). All airspace is displayed as a vector layer; tap any zone for details, vertical profile, and legend.

As you approach airspace, VARIO One warns you with a voice announcement and configurable lead time — including snooze and automatic escalation.

REAL-TIME AIR TRAFFIC WITH SAFESKY

See paragliders, hang gliders, gliders, helicopters and other aircraft in real time on your map. Your position is shared simultaneously so others can see you too. Proximity alerts via sound and vibration — graded by distance and speed. Free registration directly in the app.

EXTERNAL BLUETOOTH VARIOMETERS

Connect your device wirelessly for even more precise vario signals. Supported devices:

• BlueFly Vario (multiple protocols)
• Mipfly MipBipX & MipTrack
• Stodeus BlueBip & UltraBip
• Skytraxx (BLE)

Pair at any time from Settings — no onboarding required.

THERMAL ASSISTANT

Your flight track is coloured live by climb and sink rate — instantly showing where the best lift is in your circle. The app automatically detects when you're circling and switches to thermal view. Includes wind direction and speed.

IMPORT FLIGHTS

Import previously flown flights as GPX or IGC files directly into your logbook — via the + button or "Open with" from the Files app.

VARIOMETER

• Immediate audio lift signal combining barometric pressure and accelerometer.
• Kalman filter for internal barometer (baro + IMU fusion) — smoother, more precise signal.
• Display of altitude, speed and glide ratio.
• Barometric altitude with QNH — set directly from the flight screen.
• Climb tone threshold freely configurable (down to −0.5 m/s).
• Rotating wind direction indicator with time since last calculation.

FLIGHT RECORDING

• Automatic recording as GPS and IGC track.
• Digital logbook with map view and statistics.
• Automatic upload to DHV-XC and XContest.
• Automatic takeoff and landing detection.

MAP

• Airspace downloadable by country or importable as OpenAir file.
• Tap to view airspace details, vertical profile, and legend.
• Live wind from thousands of weather stations.
• Takeoff and landing sites — always free.

APPLE WATCH

• Standalone vario with precise pressure sensors.
• Ideal for hike & fly, as a backup, or when cockpit space is limited.
• Flight recording in GPX and IGC format.
• Rotating wind direction indicator.

New features are added regularly. You can try all features free for 14 days. Takeoff and landing sites remain free after that. Subscription renews automatically and can be cancelled at any time.