Frequently asked questions

Here are some frequently asked questions about the Chrono mobile app

Why does a point of sale appear in chrono when it’s no longer open?

Although this is a rare occurrence, there is sometimes a delay between the closing of a point of sale and the updating of our data source. Please feel free to contact us if you notice any inaccurate information on the results page.

Why are opening hours unavailable or inaccurate?

The opening hours of participating retailers originate from a web service external to Chrono. Retailers are under no obligation to provide their opening hours.

Do I need an internet connection to use this feature?

Yes, you must have access to the Internet and be connected in order to use this feature.

Do I have to enable geolocation in order to use this feature?

No, unless you want to view points of sale near your current location. You can activate and deactivate the GPS in the application settings via the main menu of the Chrono application.

Can I add a point of sale as a favourite?

Yes, you can set a point of sale as a favourite address and choose an icon for it.

Can I view the fares or services offered at a point of sale?

No, this information is not available at this time. The metropolitan ticket offices offer most of the transit fares available in the territory.

Is this feature available on iPhones?

This feature is currently available on Android only.

What will the “Nearby” tab feature next?

More information will be available in the coming months, including the addition of nearby BIXI stations.

Do I need an Internet connection to use this feature?

Yes. You need a network connection to read your card’s content.

Is this feature available on tablets with NFC technology?

No, this feature was designed specifically for smartphones and cannot be downloaded on tablets.

On my Android phone, I was able to read my card’s contents at first, but it does not work when I try to read it again.

For the OPUS card reader to work properly, you need to move your card away from your phone, then move it back into place for the second reading.

It takes me several tries to read my OPUS card.

Your phone’s protective case, shell or NFC location might be causing the problem.

  1. Please take your phone out of its case or shell and try again.
  2. While maintaining contact between your phone and OPUS card, slide it down your phone. It will vibrate once you hit the detection area.

Depending on the phone model, you might need to place your OPUS card on the front or back of the phone to read it. Try positioning the card against the phone’s surface in different spots to check all possible locations. If you are still having difficulties reading your card’s contents, please let us know by using “Contact us” in the app or by sending us an email indicating the issue at

Are there any security issues or risk of my personal information being stolen when we use NFC technology?

No. This technology is widely used in the banking sector and has a proven track record for security and reliability. It also has scalable security components and always offers the best possible protection.  Rest assured that the Chrono application transmits no personal information via NFC.

Will all smartphones and operating systems support this feature?

No, not every phone will support this feature since some older models lack the necessary software for the reader to function properly.

Can I buy transit fares on the app after the card has been read?

No, the Chrono app does not support transit fare purchases at this time. The application will undergo public testing to identify key parameters for further development and possibly support in-app purchases in the future. We are unable to provide a timeline for this project’s completion at the present time.

Does the Chrono app save my OPUS card’s contents after reading it?

No, the application does not store any information.

How and why should I register my OPUS card?

By registering your OPUS card, your card and fares will automatically be covered by the replacement guarantee if lost, broken or stolen. In other words, you can replace your card and recover your valid fares when you report it to your transit agency’s customer service department as lost, broken or stolen.

Registration is free. Visit your public transit agency’s website to register your OPUS card. If you already have a reduced fare photo OPUS card (for schoolchildren, students or seniors), your card is automatically registered and your card’s content is covered by the replacement guarantee.

Why is my OPUS card being detected as invalid?

The OPUS card may have been invalidated after being reported as lost or replaced. You can learn the exact reason by contacting customer service at your public transit agency. You can also get a new OPUS card at a public transit point of sale.

What does the message “Your phone is not compatible with the OPUS card reader” mean?

Your phone model does not support the NFC feature needed to read OPUS cards.

Why isn’t my phone detecting my OPUS card, even after several tries?

There are several reasons why your card might not be detectable:

  1. Not positioning the card against your phone correctly: Phones will usually, but not always, have the detection area located in the upper part of the phone. While maintaining contact between your phone and OPUS card, slide it down your phone. It will vibrate once you hit the detection area.
  2. Not holding your OPUS card against your phone for long enough: The OPUS card must be kept flat against the phone for a few seconds for the reader to work properly.
  3. Not being able to read the OPUS card chip: Some cards use older chips that cannot be read or recognized by the NFC feature.
  4. Protective case or shell interfering with the NFC signal: Please remove your phone from its case or shell and try again.

If you are still having difficulties reading your card’s contents, please let us know by using “Contact us” in the app or by sending us an email indicating the issue at

Does it also read “Solo” and “Occasional” cards?

Yes, you can also read “Solo” and “Occasional” card content.

How do I read my OPUS card’s contents?

If you have an Android phone, ensure the NFC feature is activated. For iPhones, NFC is activated by default.

Press your OPUS card against the upper part of your mobile phone. (The detection area’s location depends on the phone model and might be located on the front or back). It will vibrate once it connects. Now, hold your OPUS card still for a few seconds so the app can recognize it.  You can click on the following link for a visual, step-by-step guide:

What does “Reading an OPUS card” mean?

This is the action of viewing an OPUS card’s contents. This process lets you see if your card contains transit fares and their status (type, number, expiry dates, etc.).

How can I find out how crowded my bus is?
To find out the level of crowding for a specific bus, select a stop. The schedule for this stop will open and an icon will appear next to the schedule when available. The level of crowding is displayed following a 5-level scale: empty, almost empty, some seats available, standing room only and nearly full. This feature will be available as of 12 October 2020 for the exo and STM bus network only. Other services and service operators will be added in the future.
How can I rent a BIXI with Chrono?
To enable BIXI rentals in Chrono, follow these instructions:
  1. Sync your BIXI account with Chrono or create a new BIXI account.
  2. Make sure your subscription allows you to rent a BIXI bike.
  3. Tap on any BIXI station to confirm how many bikes are currently available.
  4. Complete the rental. Your bike will be held for 5 minutes with a specific code to unlock it. You can repeat this step if needed.
  5. Enter the code given at the main terminal or use your BIXI key. You’re ready to go!
How can I see the number of bikes available at a BIXI station?
First, make sure the BIXI map is activated. To see the number of bikes and parking spaces available in real time, simply tap the BIXI station on the map. If you use a BIXI station regularly, don’t forget to add it to your favourites to access it directly on the Chrono home screen!
How can I plan a bike trip?
You can switch from public transit options to bike mode by selecting the “Bike” tab above the itinerary suggestions. Three itinerary options will be shown.
How can I plan an itinerary?
Simply enter the address of your destination in the search bar. You can also specify a departure address or change the order by tapping the ↑↓ icon. You can refine the itinerary results by choosing an arrival or departure time. You can also refine by mode of transport or by a specific line. Don’t forget to bookmark addresses you use regularly by tapping the bookmark icon next to the address!
How can I change the direction of a line when browsing schedules?
Select the favourite you want more information about. If you do not have a favourite set, use the search bar to select the desired line. Details for the line, including all stops, will appear, with a tab for each direction. If you have enabled geolocation, the closest stop will be highlighted in blue.
How can I report a problem with the app?
To report any technical issue concerning Chrono, please reach out to our support team at
How can I report a delay or a service disruption (bus, metro or train)?
Public transit agencies are responsible for service maintenance. If you wish to report an issue regarding services, such as schedules and disruptions, please contact the customer service team of the agency in question:
  • Exo
  • RTL
  • STL
  • STM
How can I access information about the REM mitigation measures?
The REM mitigation measure schedules are updated based on information released by the public transit agencies. Find out more about the mitigation measures on the Mobilité Montréal website.
What is Chrono?
Chrono is a mobile application dedicated to providing users with information and tools to plan their trips using the public transit services in the Greater Montréal area. The application, which is available for Android and iOS, offers features for:
  • Accessing metro, bus and commuter train schedules, even without WiFi or data access
  • Tracking buses and trains in real time
  • Quickly finding information about service disruptions
  • Finding the routes for a particular service
  • Determining an arrival time
  • Displaying the location of bus stops, metro stations and train stations around a particular location on the map
  • Finding the best itinerary, using the trip planner
  • Renting a BIXI bike and seeing the location and capacity of BIXI stations
Who developed Chrono?
The Autorité régionale de transport métropolitain (ARTM), owner of the Chrono mobile app, mandated exo to develop the app in June 2017. The app offers users an effective way to plan their trips on public transit services (buses, metros and trains) in the Greater Montréal area. Exo, the Réseau de transport de Longueuil (RTL), the Société de transport de Laval (STL) and the Société de transport de Montréal (STM) share their data, in both static and real time, when available, and contribute to Chrono’s development as an app.
Will my personal data be private?
The ARTM takes the safety of your personal data and your privacy very seriously. We have created a secure environment that limits who can access your personal data and how it can be used. Learn more about personal data protection by reading our Privacy Policy.
Is Chrono accessible?
Currently, Chrono is partially accessible. Upgrades are underway to achieve a level of accessibility that meets WCAG 2.1 AA standards. Our goal is to offer all users equal access to Chrono.
How can I create a Chrono account?
You can create an account through the “Chrono” tab in the main menu. You will need to confirm the creation of your account using a link included in a confirmation email sent to the address you use to register.
What are the benefits of creating a Chrono account?
Creating a Chrono account will ensure that your favourites and alerts are saved even if the app is updated or you delete the app.
How can I delete my Chrono account?
To delete your account, please contact our support team at
Do I need an account to use the app?
No. You can access schedules, use the map, plan trips and set favourites and alerts without creating an account.
Do I need WiFi or data to use Chrono?
No. Once downloaded, Chrono gives you access to static schedules at all times. However, real-time positions of buses and trains are only available if you are connected to the internet. Other features also require WiFi or data, such as receiving alerts about service disruptions, planning a trip between two locations and updating schedules.
How can I access an alert that was dismissed?
All your alerts are visible in the newsfeed tab. Once the disruption is over, the message will disappear.
How many favourites, alerts and bookmarks can I create?
You can create as many favourites, alerts and bookmarks as you wish.
What is the difference between an alert and a favourite?
Stops you have labelled as favourites will show up on your home screen when you open the app, which makes it easier to see schedules and service status. You can enable alerts for a favourite in order to receive push notifications for any service disruption concerning this stop on the days of the week and hours you select.
Why is my bus or train not moving on the map?
Network connection may vary based on type of smart device, connection with vehicle devices and topography. If you are unable to connect to WiFi or use cellular data, icons may not show up on the map. Chrono refreshes the GPS position every 15 seconds for buses and every 5 seconds for trains.
Why can’t I see the real-time schedules?
Real-time schedules are currently available for commuter trains and buses. Network connection may vary based on type of smart device, connection with vehicle devices and topography. If you are unable to connect to WiFi or use cellular data, icons may not show up on the map.
How can I bookmark my favourite addresses?
When you search for an address, a bookmark icon will appear on the right. Tapping this icon will open a window where you can select a name and an icon for your new bookmark.
How can I access the newsfeed?
You can access the newsfeed at any time by tapping the bell icon on the upper right corner of your home screen. The newsfeed window displays all your alert messages, as well as a Twitter tab where you can see the feeds for the commuter train lines and the Montréal metro lines.
How can I set a voice shortcut with Siri?
Make sure Siri is activated on your iPhone. When you open Chrono and select a stop or a station, the Siri icon should appear in the upper right corner. Tapping this icon will open a window where you can create your personal shortcut.
How can I add a favourite?
When you select a stop, tap the star icon and the stop will be automatically added to your favourites on the home screen and on the Chrono widget. You can reorganize your favourites any way you like and add alerts to receive service disruption notifications.
How can I create an alert?
Once a stop is added as a favourite, you can set alerts for it using the bell icon. You can select the days of the week and the hours during which you want to receive notifications.
How can I activate dark mode?
You can switch your display to dark mode in your phone settings. Dark mode offers better visibility in low light conditions.
What is Chrono used for?
The Chrono app is a public transit trip planning app for the Greater Montréal area. Available for Android and iOS, the application can now be used to:  
  • Check bus, metro and commuter train schedules at any time, even when offline
  • Track the location of buses and trains in real time
  • Quickly find information about service disruptions
  • Display transit line routes
  • Establish a planned arrival time
  • Display the location of bus stops, metro stations and train stations near a particular point on the map
  • Find the best itinerary, using the trip planner
  • Reserve and unlock a BIXI bike-share bicycle with an OPUS subscription