The myFare app passed every test I threw at it during my recent visit. For each of the 5 days I used the system, I bought a day pass either in the early morning or the night before, then activated it before my first trip. After that, it was just a matter of calling up the pass, then tapping it on the bus reader - valid every time. Twice aboard the CTrain I was checked; on one trip the inspector used his portable reader to check it, kiddingly grumbling that it was only the second time that day. I saw others using it too, which hints at its apparent popularity. Sometimes the pass was slow to load, but that was probably my phone; it's an older one, coming due for replacement soon.