Nav4All seems to be pretty iffy. I (and many others from what I've read on here) had no speech with it. I was lucky if it could even find an address. After trying it for a week, I ditched it. Unfortunately, it looks like you have to pay for a good GPS app right now (either VZNav or Garmin's new app).
CrackBerry is in no way Affiliated with BlackBerry. We take pride in our unbiased content, however do occasionally receive free products from vendors that we review or discuss. For more info click here.