Telenav is a subscription turn-by-turn voice navigation system, similar to VZNav and Garmin Mobile. It sounds like Rogers is pushing it. If you don't want it, just hide the icon. Most likely if you delete it, they'll just push it back again. I'm currently trying it out on my Verizon Tour.
I was not offered a free first month, but that could be something TeleNav has done in the past. There is a free 14-day trial, which is enough to give you a feel for the app. The pricing options I was offered were: $10 / month; $99 for one year; and $249 for four years. The last time I checked, Garmin Mobile was $10 / month or $99 for as long as you owned your device. That would make Garmin cheaper if you kept your device for over a year.
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Good point about the carrier offering it. I subscribed on a month-to-month basis so I could continue to evaluate it. I had previously used Garmin Mobile. I noticed that both TeleNav and Garmin give me the same incorrect instruction at one intersection. Apparently the two apps use the same underlying maps.
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