4 stars: Used to show bus location in real time. Sometimes, bus times rapidly jump. But it is still one of the only apps that gives any useful information about STM buses. Update: Bus shows in real time again. The bus icon still lags behind a bit, but I haven't had problems for a week now.
3 stars: Reading Opus card does not work. Update: You need to create an account and login to be able use the Read Opus card feature. The app doesn't provide any information regarding this.
3 stars: It should have times of previously scheduled buses - that way if you think you've just missed one, or you think it's late - you can see what time it was supposed to arrive.
4 stars: Updating my previous review as the app is now functional. Feels a whole better than their last clunky app from a few years ago (my last attempt at using it) no lag, very clean. Too mqny info pages send you right back to the webpage, but other than that, it's a functional transit app.
5 stars: For those having an issue updating the app to the latest version, encountering downloading issues upon app startup, close the app and goto the app system settings and clear the app data and cache under storage setting. Then, restart the app. The app will then successfully download the latest database of schedules, and operate.
4 stars: I really like the card reader NFC feature. The next evolution could be to upload my OPUS credentials into the Chrono app. Then I may enter the bus or metro with the Chrono app. ...