Looks good, but too buggy to use.
Tried to book a trip today to take advantage of the double preference points promotion. Sadly, the app ignores every attempt to enter a discount code. A call to VIA was worse than useless in solving the problem.
Finally gave up and booked on the web; no double points but the tickets were $60 cheaper.
Tracksider about VIA Rail Canada, v1.0.5