Virtual Cockpit for Android

Marine Barometer

A traditional-looking barometer and marine instrument suite built around the pressure sensor already in many Android phones and tablets.

What it does

Marine Barometer combines a sea-level-corrected barometer with an aircraft-style altimeter, pressure trend graph, optional CSV logger, local/UTC analog clock, and a traditional tide clock. The barometer remains available as the main weather instrument while the second instrument panel can be changed as needed.

BarometerLive pressure, mbar/inHg display, reference elevation and short-trip Barometer Lock AltimeterQNH, QFE and QNE with External Barometer or Marine Barometer reference Pressure TrendRolling pressure graph with low-duty background sampling and optional CSV logging ClockAnalog local or UTC display Tide ClockTraditional tide phase for a location you choose CalibrationRefine absolute pressure accuracy from a trusted local barometer

Reference elevation and travel

Pressure changes with elevation as well as weather, so Marine Barometer keeps the pressure reference explicit. A reference elevation can come from a saved Location, a fresh GPS fix, or a manually entered elevation. Saved Places can also carry editable latitude and longitude for locations you want to define in advance.

For a short walk or local trip through changing elevation, Lock Barometer can hold the current weather-pressure reference for up to 60 minutes while the Altimeter is initialized for the excursion. The lock can be cancelled at any time.

Marine Barometer reference elevation and travel controls — Reference elevation can be chosen explicitly for home use or travel.

Current beta: 1.9.10

September 29, 2026 development update. Version 1.9.10 replaces the experimental Altimeter Reference Elevation workflow with a clearer 60-minute Barometer Lock, adds editable latitude and longitude to Saved Places, and adds absolute time and UTC-offset information to new log files. It builds on the 1.9.x work that separated routine Barograph graphing from optional CSV logging and expanded reference-elevation handling.

Download and install Getting started

Designed as an instrument, not a web service

Normal barometer, altimeter, clock, pressure-trend and tide-clock operation does not depend on a continuous internet connection. The app is intended to remain useful at home, aboard a boat, in an RV, at a campsite or while travelling.

Hardware requirement: the Android device must have a built-in barometric pressure sensor for barometer and altimeter operation.