How Montreal's OPUS card works and how to reload it with the Chrono app?

The OPUS card and Chrono app are both part of the public transit system in Montreal, Canada. Montreal's public transportation system is renowned for its efficiency and accessibility, serving as a vital lifeline for residents and visitors alike. Operated by the STM (Société de transport de Montréal), the network encompasses a comprehensive array of services, including buses, metro trains, and commuter trains. The iconic metro system, recognized for its distinctive architecture and efficient operation, provides rapid transit throughout the city and surrounding areas. Complemented by an extensive bus network, travelers can navigate Montreal's diverse neighborhoods with ease. With user-friendly features such as the OPUS card for seamless fare payment and the Chrono app for trip planning and real-time updates, Montreal's public transport system exemplifies modern urban mobility, contributing to the city's vibrant and dynamic character. Here's how the OPUS card works and how to recharge it with the mobile Chrono app works :

  1. OPUS Card: The OPUS card is a smart card used for accessing public transit services in Montreal. It can be loaded with various types of fares, such as single trips, daily passes, or monthly passes. Users can load money onto the card and then use it to tap in and out of buses and metro stations. The OPUS card stands as the cornerstone of Montreal's public transportation system, revolutionizing the way commuters access and utilize transit services. As a smart card solution introduced by the STM (Société de transport de Montréal), the OPUS card streamlines fare payment for buses and metro trains, offering convenience and flexibility to riders. Whether loading funds for single trips, daily passes, or monthly subscriptions, users can easily tap their OPUS card upon boarding, eliminating the hassle of carrying cash or purchasing tickets. Beyond its practicality, the OPUS card embodies Montreal's commitment to sustainable urban mobility, encouraging environmentally friendly transportation choices. With its user-friendly interface and widespread acceptance across the transit network, the OPUS card remains an indispensable tool for navigating Montreal's bustling streets and diverse neighborhoods.

  2. Chrono App: The Chrono app is a mobile application developed by the STM (Société de transport de Montréal), which is Montreal's public transit agency. Montreal's Chrono mobile app is a powerful companion for navigating the city's bustling public transit network with ease and efficiency. Chrono offers a range of features to enhance the transit experience for locals and visitors alike. From trip planning and real-time vehicle tracking to convenient fare purchasing options, the app puts essential transit information at users' fingertips. Commuters can effortlessly map out their routes, receive live updates on bus and metro arrivals, and stay informed about service disruptions or delays. With its intuitive interface and seamless integration with the OPUS card system, Chrono simplifies the process of getting around Montreal, empowering individuals to travel confidently and efficiently throughout the city. The app provides various features to help users navigate the transit system more efficiently. Some key features include:

    • Trip planning: Users can enter their starting point and destination to get route options, including bus and metro schedules, transfer points, and estimated travel times.
    • Real-time tracking: The app provides real-time updates on the locations of buses and metros, allowing users to see when the next vehicle will arrive at their stop.
    • Ticket purchase: Users can buy and store transit fares directly within the app, eliminating the need for physical tickets or cards.
    • Service alerts: The app notifies users of any service disruptions, delays, or other important information affecting their planned route.


Here's how you can easily recharge your Montreal's OPUS card with the mobile Chrono app :

  • Download the Chrono app - Choose your OS  
    This application has been around for a while now and offers the ability to view timetables for bus, metro and several other services in real time. The OPUS mobile recharge functionality has been integrated to it.
  • Synchronize your card - Once the application is open, you must click on the icon illustrating an OPUS card, which is located at the top right. To synchronize your card, simply select the “start reading” option on the OPUS card, before placing it on the mobile phone camera. It is this manipulation which will make it possible to find the card number and, therefore, the customer account.
  • Validate or reload - The OPUS card is kept read and recognized. The application allows you to see if there are any tickets left and what type of packages. At the bottom of the screen, you can begin the process of purchasing a transport ticket 100% digitally. Please note: it is always possible to start from scratch to read another card. 
  • Choose your travel area - Before purchasing a ticket, you will need to choose the travel zone. Since the overhaul of the fee schedule, zone A includes the island of Montreal, while zone B includes Laval and Longueuil. Finally, zones C and D affect the northern and southern crowns. The more areas you cross, the higher the cost of the ticket.
  • Select a ticket - This is one of the last steps before buying: choosing your type of transport ticket. There are several, from weekly to monthly, including single passages, “two passages”, “ten passages”, unlimited evenings or weekends. And the price to pay is indicated for each of these titles. So all that remains is to add a credit card, pay, and that’s it!


Both the OPUS card and Chrono app aim to make using public transit in Montreal more convenient and accessible for residents and visitors alike. Users can choose the option that best fits their preferences and travel habits. In conclusion, Montreal's OPUS card and Chrono app stand as indispensable tools in navigating the city's vibrant public transportation system. The OPUS card simplifies fare payment, offering convenience and flexibility to commuters, while the Chrono app provides real-time updates and trip planning features to enhance the transit experience. Together, these innovations reflect Montreal's commitment to providing efficient, accessible, and sustainable urban mobility solutions for residents and visitors alike, ensuring that getting around the city is both seamless and straightforward.