MetrO is your free Android guide for navigating public transport worldwide. The app covers more than 400 cities — metros, trams, RER, buses, VAL, funiculars — and calculates your routes entirely offline, without an Internet connection, directly on your phone.

Available on the Google Play Store, MetrO has been developed by Patrice Bernard & Frank Van Caenegem (Kinevia) since 1997.

MetrO is free. In return, we count on your help to report changes in your transport network via the Support and feedback function in Settings.

Input fields

• Departure field
• Arrival field
• Voice input (microphone, in each field)
• Clear the field
• Show the details of the selected stop

Toolbar

• Calculate the route
• Swap departure / arrival
• Clear both fields
• My GPS location
• Day & Time button — select the date and time of the trip
• Weather button — current temperature and conditions
• City information

Navigation bar (bottom of screen)

• Trip history
• Transport lines
• Points of interest (POI)
• Contacts
• Cities
• Settings
• Share

Tap Cities in the navigation bar to access the list of all available cities.

Browsing the list

• Cities displayed in blue are located within 50 km of your last known GPS position — handy for quickly finding the city you are in.
• The currently loaded city shows a delete and a refresh icon.
• Cities not yet installed show a download button.

Buttons at the bottom of the list

• All cities — displays the full catalogue.
• My cities — filters to already downloaded cities.
• Update all — downloads the latest data for all your installed cities.

Enter your departure in the first field and your destination in the second, then tap to start the calculation.

Results — MetrO offers up to two solutions:

• Fewer transfers — priority given to simplicity (minimum connections).
• Fastest trip — priority given to total journey time.

Each result shows the number of stops, the number of transfers and the estimated duration.

Trip details — Each step is listed:

• Departure stop, with possible walking distance
• Walk to the stop
• Line to take and direction
• Intermediate stops (expandable by tapping the line name)
• Transfer
• Alight at the arrival stop

Day and time — The time button in the toolbar lets you choose the day of the week and departure time to take into account real timetables (some lines do not run on Sundays or at night).

Tap the icon to the right of a result to display the trip on an interactive map.

MetrO offers several input modes to enter your departure or destination quickly.

Autocomplete — As soon as you start typing, a list of suggestions appears. Matching is accent- and case-insensitive.

Voice input — Tap the microphone button to the right of each field to dictate your stop in natural language. Android transcribes speech to text and MetrO searches for the matching stop.

Clear field — Each field has a ✕ button to clear its content in one gesture.

Stop card — The ℹ button to the right of the field displays the full card of the selected stop.

Special keywords

• @My location — uses your GPS position as departure or arrival.
• home — inserts your home address from your contacts.
• work — inserts your work address from your contacts.

History — Displays your recent searches so you can reuse a recent trip.

Contacts — Select an address from your Android address book.

Points of interest — Access the list of points of interest for the loaded city (museums, stations, airports…)

MetrO displays weather conditions and air quality to help you plan your journeys.

Weather button — The toolbar permanently displays the current temperature and a weather icon. Tap it to open the detailed view.

Detailed view — Hour-by-hour forecast:

• Day and time
• Icon and description of conditions (Mostly clear, Cloudy, Rain…)
• Temperature in degrees Celsius
• AQI — air quality index
• Pollen index

Data is provided by Open-Meteo (open-meteo.com). An Internet connection is required to refresh the forecast.

The Lines tab gives access to all lines for the loaded city, organised by transport groups.

Browsing lines — The list displays all lines with their official icon and colour. Tap a line to:

• Display the full list of stops, with available connections.
• Display the line map on an interactive OpenStreetMap background.

Filtering lines for calculation — Useful for excluding certain transport modes (e.g. metro only, without bus). The list is organised into:

• Groups — enable/disable an entire transport type (Metro, Tram, RER, Bus, Funicular…).
• Lines — refine by enabling or disabling each line individually.

Tap to the right of an input field, or tap a stop in the points of interest list, to access its detailed card.

A stop card includes:

• Information — address, phone number, website, opening hours (for POI).
• Map — interactive Leaflet thumbnail centred on the stop, with a popup displaying the name.
• Nearby stop(s) — nearby stations within walking distance.
• Available line(s) — all lines serving this stop, with icon and colour.

After calculation, tap the map icon to the right of a result to display the complete trip on an interactive map.

Display

• The route of each segment, coloured with the official line colour.
• Departure point
• Arrival point
• Intermediate stops and transfers marked on the route.
• A popup when tapping a stop: stop name and the line serving it.

Map engine — The map uses MapLibre GL or Leaflet / OpenStreetMap depending on the settings preference. The engine is selected in Settings > Maps.

The screen title shows the calculated trip (e.g. "Musée Carnavalet → Damrémont-Ordener").

Tap Share in the navigation bar to open the standard Android share sheet.

Shared content

• The trip (departure → destination)
• The day and time of the calculation
• A readable summary of the itinerary

Available destinations

• Quick Share (nearby Android sharing)
• E-mail
• Browser (Chrome, Opera…) or any messaging app
• Copy to clipboard

Tap Settings in the navigation bar to access the settings.